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Owen CN, Bai X, Quah T, Lo SN, Allayous C, Callaghan S, Martínez-Vila C, Wallace R, Bhave P, Reijers ILM, Thompson N, Vanella V, Gerard CL, Aspeslagh S, Labianca A, Khattak A, Mandala M, Xu W, Neyns B, Michielin O, Blank CU, Welsh SJ, Haydon A, Sandhu S, Mangana J, McQuade JL, Ascierto PA, Zimmer L, Johnson DB, Arance A, Lorigan P, Lebbé C, Carlino MS, Sullivan RJ, Long GV, Menzies AM. Delayed immune-related adverse events with anti-PD-1-based immunotherapy in melanoma. Ann Oncol 2021; 32:917-925. [PMID: 33798657 DOI: 10.1016/j.annonc.2021.03.204] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 03/09/2021] [Accepted: 03/28/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Immune-related adverse events (irAEs) typically occur within 4 months of starting anti-programmed cell death protein 1 (PD-1)-based therapy [anti-PD-1 ± anti-cytotoxic T-lymphocyte-associated protein 4 (CTLA4)], but delayed irAEs (onset >12 months after commencement) can also occur. This study describes the incidence, nature and management of delayed irAEs in patients receiving anti-PD-1-based immunotherapy. PATIENTS AND METHODS Patients with delayed irAEs from 20 centres were studied. The incidence of delayed irAEs was estimated as a proportion of melanoma patients treated with anti-PD-1-based therapy and surviving >1 year. Onset, clinical features, management and outcomes of irAEs were examined. RESULTS One hundred and eighteen patients developed a total of 140 delayed irAEs (20 after initial combination with anti-CTLA4), with an estimated incidence of 5.3% (95% confidence interval 4.0-6.9, 53/999 patients at sites with available data). The median onset of delayed irAE was 16 months (range 12-53 months). Eighty-seven patients (74%) were on anti-PD-1 at irAE onset, 15 patients (12%) were <3 months from the last dose and 16 patients (14%) were >3 months from the last dose of anti-PD-1. The most common delayed irAEs were colitis, rash and pneumonitis; 55 of all irAEs (39%) were ≥grade 3. Steroids were required in 80 patients (68%), as well as an additional immunosuppressive agent in 27 patients (23%). There were two irAE-related deaths: encephalitis with onset during anti-PD-1 and a multiple-organ irAE with onset 11 months after ceasing anti-PD-1. Early irAEs (<12 months) had also occurred in 69 patients (58%), affecting a different organ from the delayed irAE in 59 patients (86%). CONCLUSIONS Delayed irAEs occur in a small but relevant subset of patients. Delayed irAEs are often different from previous irAEs, may be high grade and can lead to death. They mostly occur in patients still receiving anti-PD-1. The risk of delayed irAE should be considered when deciding the duration of treatment in responding patients. However, patients who stop treatment may also rarely develop delayed irAE.
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Affiliation(s)
- C N Owen
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia; Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - X Bai
- Massachusetts General Hospital, Boston, USA; Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Melanoma, Peking University Cancer Hospital & Institute, Beijing, China
| | - T Quah
- Westmead and Blacktown Hospitals, Sydney, Australia
| | - S N Lo
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia
| | - C Allayous
- Dermatology Department, Université de Paris, AP-HP Saint-Louis Hospital, INSERM, Paris, France
| | - S Callaghan
- The Christie NHS Foundation Trust, Manchester, UK
| | | | - R Wallace
- Peter MacCallum Cancer Centre and the University of Melbourne, Melbourne, Australia
| | - P Bhave
- The Alfred Hospital, Melbourne, Australia
| | - I L M Reijers
- Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - N Thompson
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - V Vanella
- Istituto Nazionale Tumori IRCCS Fondazione Pascale, Napoli, Italy
| | - C L Gerard
- Lausanne University Hospital, Lausanne, Switzerland
| | - S Aspeslagh
- University Hospital Brussels, Brussels, Belgium
| | - A Labianca
- Papa Giovanni XXIII Cancer Center Hospital, Bergamo, Italy
| | - A Khattak
- Fiona Stanley Hospital and Edith Cowan University, Perth, Australia
| | - M Mandala
- University of Perugia, Unit of Medical Oncology, Santa Maria misericordia hospital, Perugia, Italy
| | - W Xu
- Princess Alexandra Hospital and The University of Queensland, Brisbane, Australia
| | - B Neyns
- University Hospital Brussels, Brussels, Belgium
| | - O Michielin
- Lausanne University Hospital, Lausanne, Switzerland
| | - C U Blank
- Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - S J Welsh
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - A Haydon
- The Alfred Hospital, Melbourne, Australia
| | - S Sandhu
- Peter MacCallum Cancer Centre and the University of Melbourne, Melbourne, Australia
| | - J Mangana
- Dermatology, Department of Dermato-Oncology, University Hospital Zurich, Zürich, Switzerland
| | - J L McQuade
- The University of Texas MD Anderson Cancer Center, Houston, USA
| | - P A Ascierto
- Istituto Nazionale Tumori IRCCS Fondazione Pascale, Napoli, Italy
| | - L Zimmer
- Department of Dermatology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - D B Johnson
- Vanderbilt University Medical Center, Nashville, USA
| | - A Arance
- Hospital Clinic Barcelona, Barcelona, Spain
| | - P Lorigan
- The Christie NHS Foundation Trust, Manchester, UK; The University of Manchester, Manchester, UK
| | - C Lebbé
- Dermatology Department, Université de Paris, AP-HP Saint-Louis Hospital, INSERM, Paris, France
| | - M S Carlino
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia; Westmead and Blacktown Hospitals, Sydney, Australia
| | | | - G V Long
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia; Royal North Shore Hospital, Sydney, Australia; Mater Hospital, Sydney, Australia.
| | - A M Menzies
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia; Royal North Shore Hospital, Sydney, Australia; Mater Hospital, Sydney, Australia
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Welsh SJ, Khan S. Radiological localizing techniques in adrenal tumors. MINERVA ENDOCRINOL 2009; 34:161-169. [PMID: 19471240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The characterisation of adrenal lesions is a common radiological dilemma. Incidental adrenal lesions are commonly detected with computed tomography (CT), and lesion characterisation is critical. The prevalence of incidental adrenal lesions has been reported to be 2.3% at autopsy and 0.5-2% with abdominal CT. Such lesions are likely to be seen with increasing frequency given the expanding use of radiological imaging in clinical practice. Although the majority of adrenal lesions are benign, in patients with an extra-adrenal primary cancer the probability of an adrenal mass being a metastasis is 52%. Unfortunately, there may be significant overlap between the imaging appearances of benign lesions such as lipid-poor adenomas and malignant lesions, particularly metastases and small adrenal carcinomas. This review highlights recent advances in radiological imaging of adrenal lesions and we discuss the relative merits of CT and magnetic resonance imaging to aid the identification of benign and malignant adrenal lesions and their roles, in combination with biochemical and clinical data, in recognizing common pathologies such as adrenal adenoma, phaeochromocytoma, carcinoma and metastases. We also discuss the radiological characteristics of rarer adrenal lesions including lymphoma, neuroblastic tumours (neuroblastoma, ganglioneuroblastoma, and ganglioneuroma), lipomatous tumours (myelolipoma, angiolipoma, teratoma, lipoma and liposarcoma), in addition to hemangioma, hemangiosarcoma and leiomyosarcoma.
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Affiliation(s)
- S J Welsh
- Nuclear Medicine, Imaging Department, Imperial College Healthcare NHS Trust, Charing Cross Hospital, London, UK
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Abstract
Uracil DNA glycosylase (UDG) is a base excision repair enzyme responsible for the removal of uracil present in DNA after cytosine deamination or misincorporation during replication. Inhibition of thymidylate synthase (TS), an important target for cancer chemotherapy, leads to deoxythymidine triphosphate (dTTP) pool depletion and elevation of deoxyuridine monophosphate (dUMP) pools which may also result in the accumulation of deoxyuridine triphosphate (dUTP). Large quantities of dUTP are believed to overwhelm the pyrophosphatase dUTPase, leading to misincorporation of uracil into DNA. Uracil is removed from DNA by uracil DNA glycosylase (UDG) resulting in an abasic site, but since the ratio dUTP:dTTP may remain high during continuing TS inhibition uracil can become re-incorporated into DNA causing a futile cycle eventually leading to DNA damage and cell death. This study has used isogenic cell lines differing in their expression of UDG to investigate the role of this enzyme in sensitivity to the specific TS inhibitors, ZD9331 and raltitrexed. The study showed that although increased expression and activity of UDG may lead to increased cell growth inhibition after TS inhibition over the first 24 h of treatment (measured using 3-(4,5-dimethyl (thiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT), probably due to increased damage to single-stranded DNA, the level of enzyme expression does not affect cell viability or cell death (measured using clonogenic assay, cell counting of attached/detached cells and cleavage of both poly ADP-ribose polymerase (PARP) and caspase 3). Increased expression and activity of UDG did not affect sensitivity to TS inhibition at later time points (up to 72 h treatment). Therefore UDG does not appear to play a major role in the response to TS inhibition, at least in the model used, and the results suggest that other determinants of response previously investigated, such as TS and dUTPase, may be more important for the response to TS inhibition.
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Affiliation(s)
- S J Welsh
- CRC Centre for Cancer Therapeutics, Institute of Cancer Research, 15 Cotswold Road, Belmont, Surrey SM2 5NG, UK
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Abstract
Thymidylate synthase (TS) is an important enzyme catalysing the reductive methylation of dUMP to dTMP that is further metabolized to dTTP for DNA synthesis. Loss of viability following TS inhibition occurs as a consequence of depleted dTTP pools and at least in some cell lines, accumulation of dUTP and subsequent misincorporation of uracil into DNA. The expansion in dUTP pools is largely determined by the expression of the pyrophosphatase, dUTPase. Our previous work has shown that following TS inhibition the ability to accumulate dUTP was associated with an earlier growth inhibitory effect. 3 human lung tumour cell lines and HT29 human colon tumour cells transfected with dUTPase have been used to investigate the relationship between loss of viability following TS inhibition and dUTP accumulation. Cell cycle arrest typical of TS inhibition was an early event in all cell lines and occurred irrespective of the ability to accumulate dUTP or p53 function. However, a large expansion of dUTP pools was associated with mature DNA damage (4 h) and an earlier loss of viability following TS inhibition compared to cells in which dUTP pools were not expanded. In A549 cells damage to mature DNA may have been exacerbated by significantly higher activity of the excision repair enzyme, uracil-DNA glycosylase. Consistent with results using different inhibitors of TS, transfection of dUTPase into HT29 cells significantly reduced the cytotoxicity of a 24 h but not 48 h exposure to ZD9331. Although loss of viability can be mediated through dTTP deprivation alone, the uracil misincorporation pathway resulted in an earlier commitment to cell death. The relevance of this latter pathway in the clinical response to TS inhibitors deserves further investigation.
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Affiliation(s)
- S D Webley
- CRC Centre for Cancer Therapeutics, Institute of Cancer Research, 15 Cotswold Road, Sutton, Surrey, SM2 5NG
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Welsh SJ, Titley J, Brunton L, Valenti M, Monaghan P, Jackman AL, Aherne GW. Comparison of thymidylate synthase (TS) protein up-regulation after exposure to TS inhibitors in normal and tumor cell lines and tissues. Clin Cancer Res 2000; 6:2538-46. [PMID: 10873110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Thymidylate synthase (TS) is an important target for cancer chemotherapy. However, several mechanisms of resistance to TS inhibitors have been described. One mechanism that may be relevant to short-term exposure to TS inhibitors occurs as a result of disruption of the autoregulatory loop, which allows TS to control its own translation. This disruption leads to up-regulation of TS protein and is generally thought to decrease efficacy. This study has investigated TS protein up-regulation using a range of TS inhibitors in both tumor and nonmalignant cell lines in vitro and in vivo. Up-regulation of TS protein showed a time-, dose-, and cell-type-specific response to treatment with ZD9331. This response was observed in W1L2 cells treated for 24 h at equitoxic doses of raltitrexed (6-fold), ZD9331 (10-fold), fluorouracil (5-fold), LY231514 (7-fold), AG337 (7-fold), and BW1843U89 (3-fold). Up-regulation was observed over a range of doses. Elevation of TS protein only persisted up to 12 h after removal of drug. The extent of induction does not depend on basal TS levels. Nontransformed human fibroblasts showed significantly greater up-regulation of TS protein than tumor cells exposed to an equitoxic dose of ZD9331. In vivo experiments using the L5178Y thymidine kinase -/- mouse lymphoma implanted into DBA2 mice also showed greater up-regulation of TS protein in normal intestinal epithelial cells compared with tumor cells. These results confirm that TS up-regulation is a common feature of TS inhibition in tumor cells and that it may occur to a greater extent in normal tissues, although the clinical implications of these findings remain to be determined.
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Affiliation(s)
- S J Welsh
- Cancer Research Campaign Centre for Cancer Therapeutics, Belmont, Surrey, United Kingdom
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