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Starace M, Rapparini L, Cedirian S. Skin Malignancies Due to Anti-Cancer Therapies. Cancers (Basel) 2024; 16:1960. [PMID: 38893081 PMCID: PMC11171349 DOI: 10.3390/cancers16111960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 05/19/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024] Open
Abstract
Skin cancers involve a significant concern in cancer therapy due to their association with various treatment modalities. This comprehensive review explores the increased risk of skin cancers linked to different anti-cancer treatments, including classic immunosuppressants such as methotrexate (MTX), chemotherapeutic agents such as fludarabine and hydroxyurea (HU), targeted therapies like ibrutinib and Janus Kinase inhibitors (JAKi), mitogen-activated protein kinase pathway (MAPKP) inhibitors, sonic hedgehog pathway (SHHP) inhibitors, and radiotherapy. MTX, a widely used immunosuppressant in different fields, is associated with basal cell carcinoma (BCC), cutaneous squamous cell carcinoma (cSCC), and cutaneous melanoma (CM), particularly at higher dosages. Fludarabine, HU, and other chemotherapeutic agents increase the risk of non-melanoma skin cancers (NMSCs), including cSCC and BCC. Targeted therapies like ibrutinib and JAKi have been linked to an elevated incidence of NMSCs and CM. MAPKP inhibitors, particularly BRAF inhibitors like vemurafenib, are associated with the development of cSCCs and second primary melanomas (SPMs). SHHP inhibitors like vismodegib have been linked to the emergence of cSCCs following treatment for BCC. Additionally, radiotherapy carries carcinogenic risks, especially for BCCs, with increased risks, especially with younger age at the moment of exposure. Understanding these risks and implementing appropriate screening is crucial for effectively managing patients undergoing anti-cancer therapies.
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Affiliation(s)
- Michela Starace
- Dermatology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy; (M.S.); (S.C.)
- Department of Medical and Surgical Sciences, Alma Mater Studiorum University of Bologna, 40138 Bologna, Italy
| | - Luca Rapparini
- Dermatology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy; (M.S.); (S.C.)
- Department of Medical and Surgical Sciences, Alma Mater Studiorum University of Bologna, 40138 Bologna, Italy
| | - Stephano Cedirian
- Dermatology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy; (M.S.); (S.C.)
- Department of Medical and Surgical Sciences, Alma Mater Studiorum University of Bologna, 40138 Bologna, Italy
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Seervai RNH, Cho WC, Chu EY, Marques-Piubelli ML, Ledesma DA, Richards K, Heberton MM, Nelson KC, Nagarajan P, Torres-Cabala CA, Prieto VG, Curry JL. Diverse landscape of dermatologic toxicities from small-molecule inhibitor cancer therapy. J Cutan Pathol 2021; 49:61-81. [PMID: 34622477 DOI: 10.1111/cup.14145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/29/2021] [Accepted: 10/02/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND Advances in molecular biology and genetics have contributed to breakthrough treatments directed at specific pathways associated with the development of cancer. Small-molecule inhibitors (Nibs) aimed at a variety of cellular pathways have been efficacious; however, they are associated with significant dermatologic toxicities. METHODS We conducted a comprehensive review of dermatologic toxicities associated with Nibs categorized into the following five groups: (a) mitogen-activated protein kinase; (b) growth factor/multi-tyrosine kinase; (c) cell division/DNA repair; (d) signaling associated with myeloproliferative neoplasms; and (e) other signaling pathways. Prospective phase I, II, or III clinical trials, retrospective literature reviews, systematic reviews/meta-analyses, and case reviews/reports were included for analysis. RESULTS Dermatologic toxicities reviewed were associated with every class of Nibs and ranged from mild to severe or life-threatening adverse skin reactions. Inflammatory reactions manifesting as maculopapular, papulopustular/acneiform, and eczematous lesions were frequent types of dermatologic toxicities seen with Nibs. Squamous cell carcinoma with keratoacanthoma-like features was associated with a subset of Nibs. Substantial overlap in dermatologic toxicities was found between Nibs. CONCLUSIONS Dermatologic toxicities from Nibs are diverse and may overlap between classes of Nibs. Recognition of the various types of toxicities from Nibs is critical for patient care in the era of "oncodermatology/dermatopathology."
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Affiliation(s)
- Riyad N H Seervai
- Medical Scientist Training Program, Baylor College of Medicine, Houston, Texas, USA.,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, USA.,Department of Dermatology, Baylor College of Medicine, Houston, Texas, USA
| | - Woo Cheal Cho
- Department of Pathology, Section of Dermatopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Emily Y Chu
- Department of Dermatology, The University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Mario L Marques-Piubelli
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Debora A Ledesma
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Kristen Richards
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Meghan M Heberton
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Kelly C Nelson
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Priyadharsini Nagarajan
- Department of Pathology, Section of Dermatopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Carlos A Torres-Cabala
- Department of Pathology, Section of Dermatopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Victor G Prieto
- Department of Pathology, Section of Dermatopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jonathan L Curry
- Department of Pathology, Section of Dermatopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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3
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Abbas MN, Tan WS, Kichenadasse G. Sorafenib-related generalized eruptive keratoacanthomas (Grzybowski syndrome): a case report. J Med Case Rep 2021; 15:481. [PMID: 34544494 PMCID: PMC8454110 DOI: 10.1186/s13256-021-03037-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 07/29/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Sorafenib is an oral multikinase inhibitor that targets Raf serine/threonine receptor tyrosine kinases and inhibits tumor cell growth and angiogenesis. Cutaneous toxicities of sorafenib are common, including cutaneous eruptions (such as truncal erythema and seborrheic-dermatitis-like changes) and hand-foot syndrome. Keratoacanthomas and squamous cell carcinomas have been reported previously; however, we report a case of multiple eruptive keratoacanthomas in the form of Grzybowski syndrome after initiation of sorafenib. CASE PRESENTATION We report a 63-year-old Caucasian male who developed multiple cutaneous eruptive keratoacanthomas after starting sorafenib 400 mg twice daily. He had a known history of hepatitis-C-related cirrhosis and hepatocellular carcinoma, and previously had actinic keratosis and skin squamous cell carcinoma excision. Approximately two and a half months after starting sorafenib, the patient initially developed two lesions, one on each forearm, and after excision, these lesions demonstrated histological features of squamous cell carcinoma. One month later, the patient presented with approximately 48 new skin lesions of varying size on the back, bilateral upper limbs, and face requiring excisional biopsy of a large number of these lesions. Histopathology showed eruptive invasive keratoacanthomas (Grzybowski syndrome). Sorafenib was temporarily stopped and subsequently restarted at a lower dose. Acitretin 25 mg daily was commenced after few weeks, and no further keratoacanthomas developed during his treatment. CONCLUSIONS We report a unique case of sorafenib-associated Grzybowski syndrome. Temporary interruption and dose reduction of sorafenib and use of acitretin appeared to prevent further development of keratoacanthomas.
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Affiliation(s)
- M Nazim Abbas
- Flinders Centre for Innovation in Cancer, Flinders Medical Centre, Adelaide, South Australia, Australia. .,Flinders University, Adelaide, South Australia, Australia.
| | - Wei Son Tan
- Flinders Centre for Innovation in Cancer, Flinders Medical Centre, Adelaide, South Australia, Australia
| | - Ganessan Kichenadasse
- Flinders Centre for Innovation in Cancer, Flinders Medical Centre, Adelaide, South Australia, Australia.,Flinders University, Adelaide, South Australia, Australia
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4
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Tisack A, Fotouhi A, Fidai C, Friedman BJ, Ozog D, Veenstra J. A clinical and biological review of keratoacanthoma. Br J Dermatol 2021; 185:487-498. [PMID: 33864244 DOI: 10.1111/bjd.20389] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/12/2021] [Indexed: 01/08/2023]
Abstract
Keratoacanthoma (KA) is a common skin tumour that remains controversial regarding classification, epidemiology, diagnosis, prognosis and management. Classically, a KA manifests as a rapidly growing, well-differentiated, squamoid lesion with a predilection for sun-exposed sites in elderly people and a tendency to spontaneously regress. Historically, KAs have been considered a variant of cutaneous squamous cell carcinoma (cSCC) and are often reported as KA-type cSCC. However, the penchant for regression has led many to categorize KAs as biologically benign tumours with distinct pathophysiological mechanisms from malignant cSCC. The clinical and histopathological similarities between KA and cSCC, particularly the well-differentiated variant of cSCC, have made definitive differentiation difficult or impossible in many cases. The ambiguity between entities has led to the general recommendation for surgical excision of KAs to ensure a potentially malignant cSCC is not left untreated. This current standard creates unnecessary surgical morbidity and financial strain for patients, especially the at-risk elderly population. There have been no reports of death from a definitive KA to date, while cSCC has an approximate mortality rate of 1·5%. Reliably distinguishing cSCC from KA would shift management strategies for KAs towards less-invasive treatment modalities, prevent unnecessary surgical morbidity, and likely reduce associated healthcare costs. Herein, we review the pathophysiology and clinical characteristics of KA, and conclude on the balance of current evidence that KA is a benign lesion and distinct from cSCC.
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Affiliation(s)
- A Tisack
- Wayne State University School of Medicine, Detroit, MI, USA
| | - A Fotouhi
- Wayne State University School of Medicine, Detroit, MI, USA
| | - C Fidai
- Department of Dermatology, Henry Ford Health System, Detroit, MI, USA
| | - B J Friedman
- Department of Dermatology, Henry Ford Health System, Detroit, MI, USA
| | - D Ozog
- Department of Dermatology, Henry Ford Health System, Detroit, MI, USA
| | - J Veenstra
- Department of Dermatology, Henry Ford Health System, Detroit, MI, USA
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5
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da Fonseca LG, Fuster-Anglada C, Carrera C, Millán C, Samper E, Sapena V, Díaz-González Á, Sanduzzi-Zamparelli M, Leal C, Forner A, Bruix J, Reig M, Boix L, Díaz A. Mutational profile of skin lesions in hepatocellular carcinoma patients under tyrosine kinase inhibition: a repercussion of a wide-spectrum activity. Oncotarget 2021; 12:440-449. [PMID: 33747359 PMCID: PMC7939531 DOI: 10.18632/oncotarget.27891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 02/01/2021] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND/AIM Dermatological adverse events (DAE) in hepatocellular carcinoma (HCC) patients treated with sorafenib predicts better outcome. Some turn into skin lesions (SL) requiring pathology examination. We describe incidence, characteristics and molecular profile of SL in HCC patients treated with sorafenib. MATERIALS AND METHODS SL were prospectively collected in 311 HCC patients who started sorafenib. SL from sorafenib cohort were compared to those from a control patient group selected to match SL type and demographics. HRAS, KRAS and BRAF mutations were analyzed by CAST-PCR, mutated p53 and MAPK pathway activation by immunohistochemistry and immune infiltration by hematoxylin-eosin staining. RESULTS Eighty-eight out of 311 patients developed DAE and 7.4% SL required histological assessment. Most frequent lesions were keratoacanthomas (n = 4), squamous-cell carcinomas (SCC)(n = 5), basal-cell carcinomas (BCC)(n = 3) and seborrheic keratosis (n = 5). HRAS and KRAS mutations were detected in 4 SL, while no mutations showed in control SL. Nuclear pERK immunostaining was identified in 33.3% of cases versus 5.3% of controls. Most SL (90%) from patients with DAE were proliferative with intense immune infiltration (73%). CONCLUSIONS The onset of SL and their molecular profile did not impact negatively on patient's prognosis, but intense proliferation of SL may reflect compensatory activation of MAPK pathway and warrants their close monitoring.
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Affiliation(s)
- Leonardo G da Fonseca
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Hospital Clínic de Barcelona, IDIBAPS, Universitat de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain.,Authors collaborated equally as first author
| | - Carla Fuster-Anglada
- Barcelona Clinic Liver Cancer (BCLC) Group, Department of Pathology, Hospital Clínic de Barcelona, Universitat de Barcelona, Barcelona, Spain.,Authors collaborated equally as first author
| | - Cristina Carrera
- Melanoma Unit, Dermatology Department, Hospital Clínic de Barcelona, Universitat de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Barcelona, Spain
| | - Cristina Millán
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Hospital Clínic de Barcelona, IDIBAPS, Universitat de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain
| | - Esther Samper
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Hospital Clínic de Barcelona, IDIBAPS, Universitat de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain
| | - Victor Sapena
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Hospital Clínic de Barcelona, IDIBAPS, Universitat de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain
| | - Álvaro Díaz-González
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Hospital Clínic de Barcelona, IDIBAPS, Universitat de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain
| | - Marco Sanduzzi-Zamparelli
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Hospital Clínic de Barcelona, IDIBAPS, Universitat de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain
| | - Cassia Leal
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Hospital Clínic de Barcelona, IDIBAPS, Universitat de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain
| | - Alejandro Forner
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Hospital Clínic de Barcelona, IDIBAPS, Universitat de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain
| | - Jordi Bruix
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Hospital Clínic de Barcelona, IDIBAPS, Universitat de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain
| | - Maria Reig
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Hospital Clínic de Barcelona, IDIBAPS, Universitat de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain
| | - Loreto Boix
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Hospital Clínic de Barcelona, IDIBAPS, Universitat de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain.,Authors collaborated equally as senior author
| | - Alba Díaz
- Barcelona Clinic Liver Cancer (BCLC) Group, Department of Pathology, Hospital Clínic de Barcelona, Universitat de Barcelona, Barcelona, Spain.,Authors collaborated equally as senior author
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6
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Deutsch A, Balagula Y, McLellan BN. Anticancer therapies associated with secondary cutaneous malignancies: A review of the literature. J Am Acad Dermatol 2020; 83:1425-1433. [DOI: 10.1016/j.jaad.2020.04.074] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/03/2020] [Accepted: 04/15/2020] [Indexed: 12/22/2022]
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7
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March-Rodriguez Á, Bellosillo B, Álvarez-Larrán A, Besses C, Pujol RM, Toll A. Rapidly Growing and Aggressive Cutaneous Squamous Cell Carcinomas in a Patient Treated with Ruxolitinib. Ann Dermatol 2019; 31:204-208. [PMID: 33911570 PMCID: PMC7992689 DOI: 10.5021/ad.2019.31.2.204] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 03/02/2018] [Accepted: 03/07/2018] [Indexed: 12/28/2022] Open
Abstract
Ruxolitinib is a Janus kinase (JAK)1 and JAK2 inhibitor approved for the treatment of myelofibrosis and for polycythemia patients who are resistant or intolerant to hydroxyurea. We report a 72 year-old man patient with polycythemia vera who developed multiple cutaneous squamous cell carcinomas (cSCCs) with keratoacanthoma-like histological features while on treatment with ruxolitinib. Similar lesions have been reported in an isolated patient who also received ruxolitinib. Our case confirms that ruxolitinib may induce eruptive cSCCs with characteristic clinical and histological features that differentiate them from conventional non-drug induced lesions. Moreover, we performed a mutational panel analysis of the tumors. The lack of specific mutations in these tumors suggests an impairment of immunosurveillance in the origin of the cutaneous lesions. Frequent and thorough dermatological examinations in patients receiving ruxolitinib with a history of photodamage, skin cancer and/or previous hydroxyurea intake is thus recommended.
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Affiliation(s)
| | - Beatriz Bellosillo
- Department of Pathology, Hospital del Mar, Parc de Salut Mar, Barcelona, Spain
| | | | - Carles Besses
- Department of Hematology, Hospital del Mar, Parc de Salut Mar, Barcelona, Spain
| | - Ramon M Pujol
- Department of Dermatology, Hospital del Mar, Parc de Salut Mar, Barcelona, Spain
| | - Agustí Toll
- Department of Dermatology, Hospital del Mar, Parc de Salut Mar, Barcelona, Spain
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8
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Wu JH, Cohen DN, Rady PL, Tyring SK. BRAF inhibitor-associated cutaneous squamous cell carcinoma: new mechanistic insight, emerging evidence for viral involvement and perspectives on clinical management. Br J Dermatol 2017; 177:914-923. [PMID: 28129674 DOI: 10.1111/bjd.15348] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2017] [Indexed: 12/18/2022]
Abstract
Mutations in the BRAF proto-oncogene occur in the majority of cutaneous melanomas. The commonly detected valine (V) to glutamate (E) mutation (V600E) is known to drive melanomagenesis and has thus been the target of two highly selective chemotherapeutic agents: vemurafenib and dabrafenib. While BRAF inhibitor therapy has revolutionized the treatment of metastatic melanoma, unanticipated cutaneous toxicities, including the development of cutaneous squamous cell carcinomas (cSCCs), are frequently reported and hinder therapeutic durability. However, the mechanisms by which BRAF inhibitors induce cutaneous neoplasms are poorly understood, thus posing a challenge for specific therapies. In this review, we summarize the clinical and molecular profiles of BRAF inhibitor-associated cSCCs, with a focus on factors that may contribute to disease pathogenesis. In particular, we discuss the emerging evidence pointing towards viral involvement in BRAF inhibitor-induced cutaneous neoplasms and offer new perspectives on future therapeutic interventions. Continued clinical and mechanistic studies along this line will not only allow for better understanding of the pathogenic progression of BRAF inhibitor-induced cSCCs, but will also lead to development of new therapeutic and preventative options for patients receiving targeted cancer therapy.
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Affiliation(s)
- J H Wu
- Baylor College of Medicine, Houston, TX, U.S.A.,Department of Dermatology, University of Texas Health Science Center at Houston, Houston, TX, U.S.A
| | - D N Cohen
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX, U.S.A
| | - P L Rady
- Department of Dermatology, University of Texas Health Science Center at Houston, Houston, TX, U.S.A
| | - S K Tyring
- Department of Dermatology, University of Texas Health Science Center at Houston, Houston, TX, U.S.A
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10
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Schneider TC, Kapiteijn E, van Wezel T, Smit JWA, van der Hoeven JJM, Morreau H. (Secondary) solid tumors in thyroid cancer patients treated with the multi-kinase inhibitor sorafenib may present diagnostic challenges. BMC Cancer 2016; 16:31. [PMID: 26786320 PMCID: PMC4719736 DOI: 10.1186/s12885-016-2060-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 01/10/2016] [Indexed: 01/30/2023] Open
Abstract
Background Sorafenib is an orally active multikinase tyrosine kinase inhibitor (TKI) that targets B-type Raf kinase (BRAF), vascular endothelial growth factor receptors (VEGFR) 1 and 2, and rearranged during transfection (RET), inducing anti-angiogenic and pro-apoptotic actions in a wide range of solid tumors. A side effect of sorafenib is the occurrence of cutaneous squamous tumors. Case presentation Here we describe three patients with a history of sorafenib treatment for advanced radioactive iodine refractory papillary thyroid cancer (two with a BRAF c.1799 T > A and one carrying a rare c.1799-1801het_delTGA mutation) who presented with secondary non-cutaneous lesions. The first patient was diagnosed with a squamous cell carcinoma (SCC) of the tongue, the second patient with a primary adenocarcinoma of the lung, and the third with a SCC originating from the cricoid. Secondary analysis was required to show that the latter two presentations were in fact recurrent thyroid cancer. Conclusion These findings suggest that drugs such as sorafenib may induce metaplasia/clonal divergence of metastatic thyroid cancer and thus cause diagnostic misclassification. Furthermore, sorafenib is potentially involved in the tumorigenesis of secondary non-cutaneous SCC. These observations should now be confirmed in larger series of patients treated with drugs such as sorafenib.
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Affiliation(s)
- Tatiana C Schneider
- Department of Clinical Oncology, Leiden University Medical Center, Leiden, The Netherlands.,Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - Ellen Kapiteijn
- Department of Clinical Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | - Tom van Wezel
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - Jan W A Smit
- Department of Endocrinology, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Hans Morreau
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands.
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11
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Macdonald JB, Macdonald B, Golitz LE, LoRusso P, Sekulic A. Cutaneous adverse effects of targeted therapies: Part I: Inhibitors of the cellular membrane. J Am Acad Dermatol 2015; 72:203-18; quiz 219-20. [PMID: 25592338 DOI: 10.1016/j.jaad.2014.07.032] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 07/22/2014] [Accepted: 07/22/2014] [Indexed: 12/18/2022]
Abstract
There has been a rapid emergence of numerous targeted agents in the oncology community in the last decade. This exciting paradigm shift in drug development lends promise for the future of individualized medicine. Given the pace of development and clinical deployment of targeted agents with novel mechanisms of action, dermatology providers may not be familiar with the full spectrum of associated skin-related toxicities. Cutaneous adverse effects are among the most frequently observed toxicities with many targeted agents, and their intensity can be dose-limiting or lead to therapy discontinuation. In light of the often life-saving nature of emerging oncotherapeutics, it is critical that dermatologists both understand the mechanisms and recognize clinical signs and symptoms of such toxicities in order to provide effective clinical management. Part I of this continuing medical education article will review in detail the potential skin-related adverse sequelae, the frequency of occurrence, and the implications associated with on- and off-target cutaneous toxicities of inhibitors acting at the cell membrane level, chiefly inhibitors of epidermal growth factor receptor, KIT, and BCR-ABL, angiogenesis, and multikinase inhibitors.
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Affiliation(s)
- James B Macdonald
- Department of Dermatology, Central Utah Clinic, Provo, Utah; Department of Pathology, Central Utah Clinic, Provo, Utah.
| | | | - Loren E Golitz
- Department of Dermatology, University of Colorado-Denver, Aurora, Colorado; Department of Pathology, University of Colorado-Denver, Aurora, Colorado
| | - Patricia LoRusso
- Department of Oncology, Wayne State University, Detroit, Michigan
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12
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Shen CT, Qiu ZL, Luo QY. Sorafenib in the treatment of radioiodine-refractory differentiated thyroid cancer: a meta-analysis. Endocr Relat Cancer 2014; 21:253-61. [PMID: 24302666 DOI: 10.1530/erc-13-0438] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The advent of biologically targeted agents and increased understanding of thyroid carcinogenesis have generated much interest in the development of biologically targeted therapeutic agents for thyroid cancer. Among them, sorafenib is the most commonly studied drug. The current meta-analysis was carried out to estimate the efficacy and safety of sorafenib administered in radioiodine-refractory differentiated thyroid cancer patients. An electronic search was conducted using PubMed/MEDLINE and EMBASE. Statistical analyses were carried out using either random-effects or fixed-effects models according to heterogeneity. All the statistical analyses were carried out using the Stata version 12.0 software. Seven eligible studies were identified. The final results indicated that 22% of the patients (95% CI: 15-28) achieved a partial response. Hand-foot syndrome, diarrhea, fatigue, rash, weight loss, and hypertension were the most frequently observed adverse effects (AEs) associated with sorafenib use and the incidence of these AEs (all grades) was 80% (95% CI: 68-91), 68% (95% CI: 59-77), 67% (95% CI: 57-78), 66% (95% CI: 50-82), 52%(95% CI: 33-72), and 31% (95% CI: 21-42) respectively. Sixty-two percent (95% CI: 36-89) patients required dose reductions due to toxicity of sorafenib. As far as PR and AEs are concerned, the results of this meta-analysis indicate that sorafenib has a modest effect in patients with radioiodine-refractory differentiated thyroid cancer and the high incidence of AEs associated with this agent may affect the quality of patients' lives. Though the use of sorafenib in the treatment of radioiodine-refractory differentiated thyroid cancer is considered promising by most physicians working in this field, more effective agents with less toxicity and cost are still needed.
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Affiliation(s)
- Chen-Tian Shen
- Department of Nuclear Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, People's Republic of China
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Kheir WJ, Sniegowski MC, El-Sawy T, Li A, Esmaeli B. Ophthalmic complications of targeted cancer therapy and recently recognized ophthalmic complications of traditional chemotherapy. Surv Ophthalmol 2014; 59:493-502. [PMID: 25130892 DOI: 10.1016/j.survophthal.2014.02.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 02/09/2014] [Accepted: 02/12/2014] [Indexed: 12/14/2022]
Abstract
As our understanding of cancer pathophysiology has increased, so have the number of targeted therapeutic agents available. By targeting specific molecules involved in tumorigenesis, targeted therapeutic agents offer the potential for significant efficacy against tumor cells while minimizing the adverse effects. We highlight the recently recognized ophthalmic complications of targeted cancer therapy, as well as recently recognized complications of traditional chemotherapeutic agents.
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Affiliation(s)
- Wajiha J Kheir
- Orbital Oncology and Ophthalmic Plastic Surgery Program, Department of Plastic Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas; American University of Beirut Medical Center, Beirut, Lebanon
| | - Matthew C Sniegowski
- Orbital Oncology and Ophthalmic Plastic Surgery Program, Department of Plastic Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Tarek El-Sawy
- Orbital Oncology and Ophthalmic Plastic Surgery Program, Department of Plastic Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas; Department of Ophthalmology, Stanford University, Palo Alto, California
| | - Alexa Li
- Orbital Oncology and Ophthalmic Plastic Surgery Program, Department of Plastic Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Bita Esmaeli
- Orbital Oncology and Ophthalmic Plastic Surgery Program, Department of Plastic Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas.
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El Tal AK, Remichofsky CJ, Mehregan DA, Ganger LK. Multiple squamous cell carcinomas following treatment with sorafenib for renal cell carcinoma. Int J Dermatol 2013; 52:1538-41. [PMID: 23676092 DOI: 10.1111/j.1365-4632.2012.05485.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Abdel Kader El Tal
- Department of Dermatology, Wayne State University, DearbornGeorgetown Dermatologists, Sterling HeightsPinkus Dermatopathology Laboratory, Monroe, MI, USA
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Breaker K, Naam M, La Rosa FG, Flaig IP, Flaig TW. Skin cancer associated with the use of sorafenib and sunitinib for renal cell carcinoma. Dermatol Surg 2013; 39:981-7. [PMID: 23464361 DOI: 10.1111/dsu.12184] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Several case series have reported an association between sorafenib and the development of skin cancer, but they differ in the reported rapidity of skin cancer onset and the frequency of recurrence with ongoing multikinase inhibitor (MKI) treatment. OBJECTIVE To compare the presentation and incidence of skin cancer in patients with renal cell carcinoma (RCC) treated with sorafenib and sunitinib. MATERIALS AND METHODS This retrospective study reviewed the records of 69 patients with RCC treated with sorafenib or sunitinib at the University of Colorado Hospital between January 2005 and July 2009. RESULTS Seven patients treated with MKI developed skin cancer (5 (13.5%) with sorafenib, 2 (6.3%) with sunitinib; 5 squamous cell carcinomas (SCC), 3 basal cell carcinomas (BCC)); all developed in sun-exposed areas during first-line MKI therapy. The median time from the start of MKI therapy until observation of a skin cancer lesion was 13.5 months. CONCLUSION We observed more cases of skin cancer during sorafenib treatment than during sunitinib treatment for advanced RCC; median MKI treatment duration before the identification of skin cancer was longer than 1 year.
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Affiliation(s)
- Kathryn Breaker
- Department of Medicine, School of Medicine, University of Colorado, Aurora, Colorado 80045, USA
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Changes in Tumor Morphology and Cyclin-Dependent Kinase Inhibitor Expression in Metastatic Melanoma Treated With Selective Second-Generation BRAF Inhibitor. Am J Dermatopathol 2013; 35:125-8. [DOI: 10.1097/dad.0b013e318263f232] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Wang CT, Lin CS, Shiau CW, Chu PY, Hsiao CC, Chiang YL, Tai WT, Chen KF. SC-1, a sorafenib derivative, shows anti-tumor effects in osteogenic sarcoma cells. J Orthop Res 2013; 31:335-42. [PMID: 22926753 DOI: 10.1002/jor.22218] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Accepted: 08/07/2012] [Indexed: 02/04/2023]
Abstract
Despite significant advances in the treatment of osteosarcoma (OS), overall survival rate of OS patients has remained relatively constant for over two decades and novel approaches are needed to further improve prognosis. Here, we report the anti-tumor effect of SC-1, a novel sorafenib derivative that closely resembles sorafenib structurally but is devoid of kinase inhibitory activity, on OS cells through mediation of signal transducer and activator of transcription 3 (STAT3). SC-1 showed similar effects to sorafenib on growth inhibition and apoptosis, and downregulated phospho-STAT3 (p-STAT3) at tyrosine 705 in all tested OS cell lines (U2OS, HOS, and 143B). Expression of STAT3-driven genes, including cylcin D1 and c-myc, were also repressed by SC-1. Ectopic expression of STAT3 in 143B cells abolished apoptosis in SC-1-treated cells. Inhibition of SHP-1 decreased SC-1-induced apoptosis. SC-1 upregulated the activity of SHP-1 in tested OS cell lines in a dose-dependent manner. Finally, SC-1 reduced 143B tumor growth significantly in vivo, which was associated with downregulation of p-STAT3 and upregulation of SHP-1 activity. These data demonstrate that SC-1 has clinical potential for the treatment of OS patients.
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Affiliation(s)
- Chen-Ti Wang
- Department of Orthopedics, National Taiwan University Hospital, Taipei, Taiwan
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Abstract
In the last 2 decades the introduction new biologic agents such as tumor necrosis factor alpha inhibitors has resulted in potent disease modifying effects in a variety of immune-mediated diseases. In addition, there were major advancements in cancer treatment due to chemotherapeutic agents including granulocyte macrophage-colony-stimulating factor, interferon, epidermal growth factor receptor inhibitors, and kinase inhibitors for the treatment of hematologic malignancies as well as solid tumors. However, a variety of toxicities including cutaneous reactions is seen in association with these agents. Awareness of commonly associated skin toxicities and recognition of corresponding histologic features is of importance.
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Chu EY, Wanat KA, Miller CJ, Amaravadi RK, Fecher LA, Brose MS, McGettigan S, Giles LR, Schuchter LM, Seykora JT, Rosenbach M. Diverse cutaneous side effects associated with BRAF inhibitor therapy: a clinicopathologic study. J Am Acad Dermatol 2012; 67:1265-72. [PMID: 22609219 DOI: 10.1016/j.jaad.2012.04.008] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Revised: 04/04/2012] [Accepted: 04/08/2012] [Indexed: 01/07/2023]
Abstract
BACKGROUND Vemurafenib, a novel selective small molecule inhibitor of BRAF, has recently been shown to be effective in the treatment of melanomas harboring the BRAF V600E mutation. Similar to the broad-spectrum RAF inhibitor sorafenib, vemurafenib induces development of squamous cell carcinomas and keratoacanthomas as a side effect of therapy. OBJECTIVE We sought to detail additional cutaneous adverse effects of vemurafenib and a similar BRAF inhibitor, dabrafenib. METHODS We evaluated the clinical and histologic feature of skin side effects developing on vemurafenib or dabrafenib therapy in 14 patients. RESULTS Eight patients developed one or more squamous cell carcinomas, and 11 patients formed benign verrucous keratoses. Eight patients developed single lesions and/or widespread eruptions with histopathologic findings of acantholytic dyskeratosis, consistent with warty dyskeratomas and Darier- or Grover-like rashes, respectively. One patient developed palmoplantar hyperkeratosis, and darkening of existing nevi and new nevi within 2 months of starting vemurafenib. Side effects presented as early as 1 week after beginning therapy, with a mean time of onset of 12.6 weeks in our cohort. LIMITATIONS This study was limited by the small number of cases, all from a single institution. CONCLUSION Selective BRAF inhibitor therapy is associated with the development of malignant and benign growths, including keratoacanthoma-like squamous cell carcinomas, warty dyskeratomas, and verrucous keratoses, along with widespread eruptions with histologic features of acantholytic dyskeratosis. Given the potential for malignant lesions to develop on treatment, awareness of potential adverse effects of these agents is necessary, and a low threshold for biopsy of new growths is recommended.
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Affiliation(s)
- Emily Y Chu
- Department of Dermatology, Hospital of University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
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Abstract
Chemotherapy and its cutaneous side effects are an increasingly common source of iatrogenic injury to the skin, hair, and nails. Cutaneous changes are among the most common side effects from treatment with particular targeted chemotherapeutic agents, especially those that target the epidermal growth factor receptor and small molecule multikinase inhibitors. Less common, but growing in recognition, are the development of secondary cutaneous neoplasms and subacute cutaneous lupus erythematosus as a result of chemotherapy. There is considerable overlap of the multiple entities described as a side effect from conventional chemotherapeutic agents; therefore, the term "toxic erythema of chemotherapy" can be used as an easily understood name.
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Bauer AJ, Francis GL. Update on the molecular signature of differentiated thyroid cancer: clinical implications and potential opportunities. Expert Rev Endocrinol Metab 2011; 6:819-834. [PMID: 30780870 DOI: 10.1586/eem.11.68] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
With the development and maturation of new technologies, there has been a steady incorporation of powerful new tools into the evaluation and management of thyroid nodules and thyroid cancer. An increasing number of reports on oncogene testing and molecular screening in fine-needle aspiration biopsy samples have been published. However, there remains a paucity of data and consensus on combining both conventional and molecular technologies to determine the diagnosis and/or prognosis of disease. All patients with differentiated thyroid cancer stand to benefit from the identification and incorporation of reliable molecular markers into clinical practice. Identification of reliable markers would allow for stratification of treatment, affording the medical and surgical teams an ability to individually tailor evaluation and treatment, applying aggressive therapy and monitoring only when clinically warranted. For the majority of patients with thyroid cancer, the incorporation of a validated, multifaceted molecular profiling system may not improve survival; however, there is great opportunity for these efforts to decrease the morbidity associated with our current approach.
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Affiliation(s)
- Andrew J Bauer
- a Pediatric Endocrinology, Department of Pediatrics, Walter Reed Army Medical Center, Washington, DC, USA.
- b Uniformed Services University, Bethesda, MD, USA
- c Thyroid Center, Division of Endocrinology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Gary L Francis
- d Division of Endocrinology, Department of Pediatrics, Children's Hospital of Richmond at The Commonwealth University Health System, Medical College of Virginia, Richmond, VA, USA
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Harris PJ, Bible KC. Emerging therapeutics for advanced thyroid malignancies: rationale and targeted approaches. Expert Opin Investig Drugs 2011; 20:1357-75. [PMID: 21910667 PMCID: PMC3195511 DOI: 10.1517/13543784.2011.614230] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
INTRODUCTION Thyroid cancer is an emerging public health concern. In the USA, its incidence has doubled in the past decade, making it the eighth most commonly diagnosed neoplasm in 2010. Despite this alarming increase, most thyroid cancer patients benefit from conventional approaches (surgery, radioiodine, radiotherapy, TSH suppression with levothyroxine) and are often cured. Nevertheless, a minority have aggressive tumors resistant to cytotoxic and other historical therapies; these patients sorely need new treatment options. AREAS COVERED Herein the biology and molecular characteristics of the common histological types of thyroid cancer are reviewed to provide context for subsequent discussion of recent developments and emerging therapeutics for advanced thyroid cancers. EXPERT OPINION Several kinase inhibitors, especially those targeting VEGFR and/or RET, have already demonstrated promising activity in differentiated and medullary thyroid cancers (DTC, MTC). Although of minimal benefit in DTC and MTC, cytotoxic chemotherapy with anti-microtubule agents and/or anthracyclines in combination with intensity-modulated radiation therapy appears to extend survival for patients with locoregionally confined anaplastic thyroid cancer (ATC), but to have only modest benefit in metastatic ATC. Further discovery and development of novel agents and combinations of agents will be critical to further progress in treating advanced thyroid cancers of all histotypes.
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Affiliation(s)
- Pamela Jo Harris
- National Cancer Institute, Cancer Therapy Evaluation Program, Bethesda, MD 20892-7426, USA.
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BRAF-targeted therapy for metastatic melanoma: rationale, clinical activity and safety. ACTA ACUST UNITED AC 2011. [DOI: 10.4155/cli.11.96] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Abstract
PURPOSE To review characteristics of patients who develop premalignant and malignant skin lesions while on sorafenib therapy and discuss implications for subsequent treatment of their primary malignancies. BACKGROUND Sorafenib is a newly developed multitargeted protein kinase inhibitor reported to induce a variety of adverse cutaneous effects, rarely including actinic keratoses, keratocanthomas, and squamous cell carcinomas (SCCs). METHODS Published reports of individuals who have developed cutaneous lesions demonstrating atypia of the epidermis are reviewed. In addition, a 77-year-old man who developed not only an SCC but also verrucas within one month of taking sorafenib monotherapy for metastatic adenocarcinoma of the lung is described. RESULTS Cutaneous lesions develop most commonly in Caucasian men older than 40 years without previous histories of skin cancer, within two weeks to three years of starting sorafenib therapy. Currently there is no definitive explanation for the relationship between sorafenib and cutaneous neoplasms. Management typically involves treatment of skin lesions with cryotherapy or excision with at least a brief discontinuation of sorafenib. In patients whose primary malignancies were responding well, sorafenib therapy was continued with close follow-up. CONCLUSIONS The possibility of rapidly developing actinic keratoses, keratocanthomas, verrucas, and SCC during treatment with sorafenib, warrants close dermatologic follow-up and a lower threshold for biopsy and treatment of suspicious cutaneous lesions. Development of a sorafenib-induced SCC is not an absolute contraindication for continued use of sorafenib therapy; however, the drug should be briefly discontinued until lesions are treated.
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Degen A, Alter M, Schenck F, Kapp A, Gutzmer R. Kutane Nebenwirkungen der medikamentösen Tumortherapie. Hautarzt 2011; 62:444-50. [DOI: 10.1007/s00105-010-2042-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Current world literature. Curr Opin Oncol 2011; 23:227-34. [PMID: 21307677 DOI: 10.1097/cco.0b013e328344b687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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[Squamous cell carcinoma in a patient receiving sorafenib]. Ann Dermatol Venereol 2010; 138:120-3. [PMID: 21333823 DOI: 10.1016/j.annder.2010.04.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2010] [Accepted: 04/16/2010] [Indexed: 11/24/2022]
Abstract
BACKGROUND Sorafenib is a multikinase inhibitor approved for the treatment of renal cell carcinoma and hepatocellular carcinoma. Associated short-term cutaneous adverse events are well known. Regarding long-term adverse events, keratoacanthoma has been reported more recently and, more rarely, invasive squamous cell carcinoma. PATIENTS AND METHODS A 56-year-old man was treated with sorafenib in December 2008 for renal cell carcinoma with cutaneous metastases. The patient had a skin phototype IV and no history of intense sun exposure. Within five months of starting sorafenib, he developed deeply invasive well-differentiated retroauricular squamous cell carcinoma. DISCUSSION Sorafenib modifies the immunostimulatory capacity of dendritic cells by reducing cytokine secretion and CD1a expression. Blockade of autocrine vascular endothelial growth factor (VEGF) signalling in keratinocytes can also select tumoural clones with increased oncogenic Ras mutation, increased activation of phospholipase D and modulation of the Ras/Raf/MAP kinase signalling pathway involved in cutaneous squamous cell carcinogenesis. CONCLUSION Cases of keratoacanthomas and deeply invasive squamous cell carcinomas reported in patients on sorafenib emphasise the need for multidisciplinary follow-up of this population and the important role of dermatologists in managing the short and long-term adverse effects of multitarget tyrosine inhibitors.
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Abstract
BACKGROUND Sorafenib (BAY 43-9006) is an inhibitor of multiple-receptor tyrosine kinases involved in tumor growth and angiogenesis, which can be advantageously administered orally. Initially used as monotherapy in advanced renal cell carcinoma, sorafenib was proven to increase progression-free survival while enhancing disease control. Clinical trials on sorafenib are at present ongoing for the treatment of various malignancies, including thyroid cancer (TC). SUMMARY Specifically, in two phase II studies recently conducted on papillary TC, although the respective results were not entirely compatible as regard partial response rate and progression-free survival, sorafenib demonstrated a relatively favorable benefit/risk profile. In another more recent phase II study, whose primary endpoint was the reinduction of radioactive iodine uptake at 26 weeks, although no reinduction of radioactive iodine uptake was observed, 59% had a beneficial response and 34% had stable disease. Sorafenib hence appears to be a valid alternative to conventional treatment of metastatic papillary TC refractory to radioiodine therapy. CONCLUSIONS Further prospective investigations are required to define the characteristics of tumor response to the drug and the factors inducing resistance to treatment. A major issue demanding immediate attention involves optimization of sorafenib treatment: this concerns multidrug combination with different tyrosine kinase inhibitors or immunomodulating agents with the aim of reducing doses and thereby improving drug tolerability and antineoplastic capability.
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Affiliation(s)
- Leonidas H Duntas
- Endocrine Unit, Evgenidion Hospital, University of Athens, Athens, Greece.
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