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Moiseenko F, Kuligina E, Elsakova E, Imyanitov E. Epidermal growth factor receptor-mutated lung carcinomas with insufficient response to epidermal growth factor receptor inhibitors. Future Oncol 2024:1-11. [PMID: 39229777 DOI: 10.1080/14796694.2024.2386925] [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: 01/09/2024] [Accepted: 07/29/2024] [Indexed: 09/05/2024] Open
Abstract
Administration of single-agent epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) is a standard treatment option for metastatic non-small cell lung carcinomas with EGFR exon 19 deletions (ex19del) and L858R substitutions. However, there is a significant interpatient heterogeneity with regard to the degree of the response and its duration. Patients with EGFR ex19del mutation, TP53 wild-type, good performance status, low tumor burden and no circulating tumor DNA (ctDNA) at baseline have the best chances to derive pronounced benefit from TKI therapy. In contrast, subjects with EGFR L858R substitution, mutated TP53, poor overall condition, high tumor volume and detectable ctDNA are generally poor responders to EGFR inhibitors. ctDNA dynamics in the first days or weeks of treatment allows reliable identification of patients, who are very unlikely to derive clinically meaningful benefit from single-agent TKIs. These patients are candidates for clinical trials, which may involve the addition of chemotherapy and antiangiogenic drugs to patients, who failed to achieve immediate benefit from TKI monotherapy.
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Affiliation(s)
- Fedor Moiseenko
- N.N. Petrov National Medical Research Center of Oncology, Ministry of Public Health of the Russian Federation, Saint-Petersburg, Russia
- N.P. Napalkov Saint Petersburg Clinical Research & Practical Centre for Specialized Types of Medical Care (Oncological), Saint-Petersburg, Russia
- State budget institution of higher education «North-Western State Medical University named after I.I Mechnikov» under the Ministry of Public Health of the Russian Federation, Saint-Petersburg, Russia
| | - Ekaterina Kuligina
- N.N. Petrov National Medical Research Center of Oncology, Ministry of Public Health of the Russian Federation, Saint-Petersburg, Russia
- N.P. Napalkov Saint Petersburg Clinical Research & Practical Centre for Specialized Types of Medical Care (Oncological), Saint-Petersburg, Russia
- Saint-Petersburg Pediatric Medical University, Saint-Petersburg, Russia
| | - Ekaterina Elsakova
- N.P. Napalkov Saint Petersburg Clinical Research & Practical Centre for Specialized Types of Medical Care (Oncological), Saint-Petersburg, Russia
| | - Evgeny Imyanitov
- N.N. Petrov National Medical Research Center of Oncology, Ministry of Public Health of the Russian Federation, Saint-Petersburg, Russia
- State budget institution of higher education «North-Western State Medical University named after I.I Mechnikov» under the Ministry of Public Health of the Russian Federation, Saint-Petersburg, Russia
- Saint-Petersburg Pediatric Medical University, Saint-Petersburg, Russia
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Poh ME, Chai CS, Liam CK, Ho GF, Pang YK, Hasbullah HH, Tho LM, Muhamad Nor I, Ho KF, Thiagarajan M, Samsudin A, Omar A, Ong CK, Soon SY, Tan SN, How SH. Does dose reduction of afatinib affect treatment outcomes of patients with EGFR-mutant metastatic non-small cell lung cancer in real-world clinical practice? Transl Lung Cancer Res 2024; 13:307-320. [PMID: 38496703 PMCID: PMC10938108 DOI: 10.21037/tlcr-23-691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 02/02/2024] [Indexed: 03/19/2024]
Abstract
Background Afatinib can be started at a dose lower than the recommended starting dose of 40 mg/day for the treatment of epidermal growth factor receptor (EGFR)-mutant non-small cell lung cancer (NSCLC), however treatment outcomes in real-world clinical practice remains unclear. Methods This retrospective study of patients with NSCLC from 18 major hospitals (public, private or university teaching hospitals) enrolled in Malaysia's National Cardiovascular and Thoracic Surgical Database (NCTSD) assessed the efficacy of lower doses of afatinib on treatment outcomes in a real-world clinical practice. Data on clinical characteristics, afatinib dosing, and treatment outcomes for patients included in NCTSD from 1st January 2015 to 31st December 2020 were analyzed. Results Of the 133 patients studied, 94.7% had adenocarcinoma. Majority of the patients (60.9%) had EGFR exon 19 deletion and 23.3% had EGFR exon 21 L858R point mutation. The mean age of patients was 64.1 years and majority (83.5%) had Eastern Cooperative Oncology Group performance status of 2-4 at diagnosis. The most common afatinib starting doses were 40 mg (37.6%), 30 mg (29.3%), and 20 mg (26.3%) once daily (OD), respectively. A quarter of patients had dose reduction (23.3%) due to side effects or cost constraints. Majority of the patients had partial response to afatinib (63.2%) whilst 2.3% had complete response. Interestingly, the objective response rate was significantly higher (72.3%) with afatinib OD doses of less than 40 mg compared to 40 mg (54.0%) (P=0.032). Patients on lower doses of afatinib were two times more likely to achieve an objective response [odds ratio =2.64; 95% confidence interval (CI): 1.20-5.83; P=0.016]. These patients had a numerically but not statistically longer median time to treatment failure (TTF). Median TTF (95% CI) for the overall cohort was 12.4 (10.02-14.78) months. Median overall survival (95% CI) was 21.30 (15.86-26.75) months. Conclusions Lower afatinib doses (<40 mg OD) could be equally effective as standard dose in patients with EGFR-mutant advanced NSCLC and may be more suited to Asian patients, minimizing side effects that may occur at higher dosages of afatinib leading to dose interruptions and affecting treatment outcomes.
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Affiliation(s)
- Mau Ern Poh
- Department of Medicine, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Chee Shee Chai
- Department of Medicine, Faculty of Medicine and Health Science, University Malaysia Sarawak, Sarawak, Malaysia
| | - Chong Kin Liam
- Department of Medicine, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Gwo Fuang Ho
- Clinical Oncology Unit, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Yong Kek Pang
- Department of Medicine, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Harissa Husainy Hasbullah
- Faculty of Medicine, Universiti Teknologi Mara, Selangor, Malaysia
- Oncology and Radiotherapy Department, General Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Lye Mun Tho
- Department of Clinical Oncology, Beacon Hospital, Selangor, Malaysia
| | - Ibtisam Muhamad Nor
- Oncology and Radiotherapy Department, General Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Kean Fatt Ho
- Mount Miriam Cancer Hospital, Pulau Pinang, Malaysia
| | | | - Azlina Samsudin
- Department of Medicine, Hospital Sultanah Nur Zahirah, Terengganu, Malaysia
| | - Azza Omar
- Respiratory Unit, Medical Department, Hospital Raja Perempuan Zainab II, Kelantan, Malaysia
| | | | | | - Sin Nee Tan
- Department of Medicine, Hospital Tengku Ampuan Afzan, Pahang, Malaysia
| | - Soon Hin How
- Department of Medicine, Hospital Tengku Ampuan Afzan, Pahang, Malaysia
- Kulliyyah of Medicine, International Islamic University Malaysia, Pahang, Malaysia
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Cárdenas-Fernández D, Soberanis Pina P, Turcott JG, Chávez-Tapia N, Conde-Flores E, Cardona AF, Arrieta O. Management of diarrhea induced by EGFR-TKIs in advanced lung adenocarcinoma. Ther Adv Med Oncol 2023; 15:17588359231192396. [PMID: 37655206 PMCID: PMC10467292 DOI: 10.1177/17588359231192396] [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: 01/27/2023] [Accepted: 07/19/2023] [Indexed: 09/02/2023] Open
Abstract
The identification of Epidermal Growth Factor Receptor (EGFR) mutations in lung adenocarcinoma has facilitated the development of personalized medicine based on oncogenic drivers. EGFR-Tyrosine Kinase Inhibitors (TKIs) are part of the targeted therapy; they impede the phosphorylation of the intracellular tyrosine kinase component of EGFR and consequently block signal transduction pathways. These drugs inhibit the proliferation and survival of tumor cells, leading to long-term progression-free survival and overall survival. Diarrhea is one of the most frequent adverse events associated with EGFR-TKIs, affecting at least 18% of patients and reaching up to 95% in some cases. Diarrhea should be managed carefully given its association with important complications, treatment interruptions, and dose reductions. Moreover, nutritional status and quality of life (QoL) can deteriorate due to severe diarrhea. Changes in diet, such as increment of fiber, supplementation with glutamine, and use of probiotics, may contribute to a decrease in the incidence of diarrhea. Improving the control of diarrhea can provide a significant benefit to the QoL of patients.
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Affiliation(s)
| | | | - Jenny G. Turcott
- Thoracic Oncology Unit, Instituto Nacional de Cancerología, Mexico City, Mexico
| | | | - Emilio Conde-Flores
- Comprehensive Cancer Center, Medica Sur Clinic Foundation, Mexico City, Mexico
| | - Andrés F. Cardona
- Foundation for Clinical and Applied Cancer Research-FICMAC , Bogotá, Colombia
| | - Oscar Arrieta
- Thoracic Oncology Unit, Instituto Nacional de Cancerología, Av. San Fernando #22, Sección XVI, Tlalpan, Mexico City 14080, Mexico
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Pretelli G, Spagnolo CC, Ciappina G, Santarpia M, Pasello G. Overview on Therapeutic Options in Uncommon EGFR Mutant Non-Small Cell Lung Cancer (NSCLC): New Lights for an Unmet Medical Need. Int J Mol Sci 2023; 24:ijms24108878. [PMID: 37240224 DOI: 10.3390/ijms24108878] [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: 05/01/2023] [Revised: 05/15/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
The majority of epidermal growth factor receptor (EGFR) mutations (85-90%) are exon 19 deletions and L858R point mutations of exon 21, characterized by high sensitivity to EGFR-tyrosine kinase inhibitors (TKIs). Less is known about uncommon mutations (10-15% of EGFR mutations). The predominant mutation types in this category include exon 18 point mutations, exon 21 L861X, exon 20 insertions, and exon 20 S768I. This group shows a heterogeneous prevalence, partly due to different testing methods and to the presence of compound mutations, which in some cases can lead to shorter overall survival and different sensitivity to different TKIs compared to simple mutations. Additionally, EGFR-TKI sensitivity may also vary depending on the specific mutation and the tertiary structure of the protein. The best strategy remains uncertain, and the data of EGFR-TKIs efficacy are based on few prospective and some retrospective series. Newer investigational agents are still under study, and there are no other approved specific treatments targeting uncommon EGFR mutations. Defining the best treatment option for this patient population remains an unmet medical need. The objective of this review is to evaluate existing data on the outcomes, epidemiology, and clinical characteristics of lung cancer patients with rare EGFR mutations, with a focus on intracranial activity and response to immunotherapy.
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Affiliation(s)
- Giulia Pretelli
- Department of Surgery, Oncology and Gastroenterology, University of Padova, 35128 Padova, Italy
| | - Calogera Claudia Spagnolo
- Medical Oncology Unit, Department of Human Pathology "G. Barresi", University of Messina, 98122 Messina, Italy
| | - Giuliana Ciappina
- Medical Oncology Unit, Department of Human Pathology "G. Barresi", University of Messina, 98122 Messina, Italy
| | - Mariacarmela Santarpia
- Medical Oncology Unit, Department of Human Pathology "G. Barresi", University of Messina, 98122 Messina, Italy
| | - Giulia Pasello
- Department of Surgery, Oncology and Gastroenterology, University of Padova, 35128 Padova, Italy
- Oncologia Medica 2, Istituto Oncologico Veneto, IRCCS, 35128 Padova, Italy
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Li HS, Wang SZ, Xu HY, Yan X, Zhang JY, Lei SY, Li T, Hao XZ, Zhang T, Yang GJ, Zhou LQ, Liu P, Wang YY, Hu XS, Xing PY, Wang Y. Afatinib and Dacomitinib Efficacy, Safety, Progression Patterns, and Resistance Mechanisms in Patients with Non-Small Cell Lung Cancer Carrying Uncommon EGFR Mutations: A Comparative Cohort Study in China (AFANDA Study). Cancers (Basel) 2022; 14:5307. [PMID: 36358728 PMCID: PMC9656097 DOI: 10.3390/cancers14215307] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/19/2022] [Accepted: 10/26/2022] [Indexed: 09/26/2023] Open
Abstract
(1) Background: Afatinib has been approved for patients with non-small cell lung cancer (NSCLC) carrying major uncommon epidermal growth factor receptor gene (EGFR) mutations. Dacomitinib, another second-generation tyrosine kinase inhibitor, has also shown promising potential for uncommon EGFR mutations. However, no comparative study has been conducted. (2) Methods: Two cohorts were employed: the AFANDA cohort, an ambispective cohort including 121 patients with uncommon EGFR mutations admitted to two tertiary hospitals in China, and an external validation afatinib cohort (ex-AC), extracted from the Afatinib Uncommon EGFR Mutations Database (N = 1140). The AFANDA cohort was divided into an afatinib cohort (AC) and a dacomitinib cohort (DC) for internal exploration. Objective response rate (ORR), progression-free survival (PFS), and adverse events (AEs) were assessed for comparison. Progression patterns and resistance mechanisms were explored. (3) Results: In total, 286 patients with advanced NSCLC carrying uncommon EGFR mutations treated with afatinib or dacomitinib were enrolled, including 79 in the AFANDA cohort (44 in the DC, 35 in the AC) and 207 in the ex-AC. In internal exploration, the ORR of the DC was significantly higher than that of the AC (60.5 vs. 26.7%, p = 0.008), but there was no significant difference in median PFS between the DC and the AC (12.0 months vs. 10.0 months, p = 0.305). Multivariate analysis confirmed an independent favorable effect of dacomitinib on PFS (hazard ratio (HR), 1.909; p = 0.047). In external validation, multivariate analysis confirmed the independent prognostic role of dacomitinib in PFS (HR, 1.953; p = 0.029). Propensity score matching analysis confirmed the superiority of dacomitinib over afatinib in terms of PFS in both univariate and multivariate analyses. Toxicity profiling analysis suggested more G1 (p = 0.006), but fewer G3 (p = 0.036) AEs in the DC than in the AC. Progression patterns revealed that the incidence of intracranial progression in the AC was significantly higher than that in the DC (50 vs. 21.1%, p = 0.002). Drug resistance analysis indicated no significant difference in the occurrence of T790M between the AC and the DC (11.8 vs. 15.4%, p = 0.772). (4) Conclusions: Compared with afatinib, dacomitinib demonstrated a more favorable activity with manageable toxicity and different progression patterns in patients with NSCLC carrying uncommon EGFR mutations.
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Affiliation(s)
- Hong-Shuai Li
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Shou-Zheng Wang
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
- Department of Medical Oncology, Beijing Chest Hospital, Beijing Tuberculosis and Thoracic Tumor Research Institute, Capital Medical University, Beijing 101149, China
| | - Hai-Yan Xu
- Department of Comprehensive Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Xiang Yan
- Department of Oncology, The Fifth Medical Center, Chinese PLA General Hospital, Beijing 100000, China
| | - Jin-Yao Zhang
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Si-Yu Lei
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Teng Li
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Xue-Zhi Hao
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Tao Zhang
- Department of Radiotherapy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100000, China
| | - Guang-Jian Yang
- Department of Respiratory Medicine, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Ji’nan 250000, China
| | - Li-Qiang Zhou
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Peng Liu
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Yu-Ying Wang
- Department of Oncology, The Fifth Medical Center, Chinese PLA General Hospital, Beijing 100000, China
| | - Xing-Sheng Hu
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Pu-Yuan Xing
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Yan Wang
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Koulouris A, Tsagkaris C, Corriero AC, Metro G, Mountzios G. Resistance to TKIs in EGFR-Mutated Non-Small Cell Lung Cancer: From Mechanisms to New Therapeutic Strategies. Cancers (Basel) 2022; 14:3337. [PMID: 35884398 PMCID: PMC9320011 DOI: 10.3390/cancers14143337] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 06/25/2022] [Accepted: 07/06/2022] [Indexed: 02/04/2023] Open
Abstract
Resistance to tyrosine kinase inhibitors (TKIs) of the epidermal growth factor receptor (EGFR) in advanced mutant Non-Small Cell Lung Cancer (NSCLC) constitutes a therapeutic challenge. This review intends to summarize the existing knowledge about the mechanisms of resistance to TKIs in the context of EGFR mutant NSCLC and discuss its clinical and therapeutic implications. EGFR-dependent and independent molecular pathways have the potential to overcome or circumvent the activity of EGFR-targeted agents including the third-generation TKI, osimertinib, negatively impacting clinical outcomes. CNS metastases occur frequently in patients on EGFR-TKIs, due to the inability of first and second-generation agents to overcome both the BBB and the acquired resistance of cancer cells in the CNS. Newer-generation TKIs, TKIs targeting EGFR-independent resistance mechanisms, bispecific antibodies and antibody-drug conjugates or combinations of TKIs with other TKIs or chemotherapy, immunotherapy and Anti-Vascular Endothelial Growth Factors (anti-VEGFs) are currently in use or under investigation in EGFR mutant NSCLC. Liquid biopsies detecting mutant cell-free DNA (cfDNA) provide a window of opportunity to attack mutant clones before they become clinically apparent. Overall, EGFR TKIs-resistant NSCLC constitutes a multifaceted therapeutic challenge. Mapping its underlying mutational landscape, accelerating the detection of resistance mechanisms and diversifying treatment strategies are essential for the management of the disease.
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Affiliation(s)
- Andreas Koulouris
- Thoracic Oncology Center, Theme Cancer, Karolinska University Hospital, 17177 Stockholm, Sweden;
- Faculty of Medicine, University of Crete, 70013 Heraklion, Greece;
| | | | - Anna Chiara Corriero
- School of Medicine, Faculty of Health, Education, Medicine & Social Care, Anglia Ruskin University, Bishop Hall Lane, Chelmsford CM1 1SQ, UK;
| | - Giulio Metro
- Giulio Metro, Medical Oncology, Santa Maria della Misericordia Hospital, Azienda Ospedaliera di Perugia, 06132 Perugia, Italy;
| | - Giannis Mountzios
- Clinical Trials Unit, Fourth Department of Medical Oncology, Henry Dunant Hospital Center, 11526 Athens, Greece
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Chan SL, Wong N, Lam WKJ, Kuang M. Personalized treatment for hepatocellular carcinoma: Current status and future perspectives. J Gastroenterol Hepatol 2022; 37:1197-1206. [PMID: 35570200 DOI: 10.1111/jgh.15889] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 05/08/2022] [Indexed: 12/24/2022]
Abstract
Systemic treatment for hepatocellular carcinoma (HCC) has been advancing rapidly over the last decade. More novel agents, including both targeted agents and immune checkpoint inhibitors, are available for physicians to use sequentially or concurrently for patients with advanced HCC. Despite more options, only a proportion of patients benefit from each regimen. Therefore, clinicians are facing challenges on how to choose the right regimen for the right patient with HCC, which raises the importance of personalized treatment approach. To advance personalized treatment for HCC, one approach relies on the acquisition of biomarker data from clinical trials to evaluate clinical parameters or genotypes in association with outcomes of selected drugs. This approach has led to finding of high baseline alpha-fetoprotein levels in association with benefits of ramucirumab. Cumulative findings from multiple clinical trials and translational studies also suggest that selected etiology and/or genotype of HCC could predict resistance to immune checkpoint inhibitors. The second approach is to decipher the tumor heterogeneity of HCC with an aim to identify clinically relevant patterns to guide clinical decisions. Tumor heterogeneity could exist within a single tumor (intra-tumoral heterogeneity), among different tumors in the same patient (inter-tumoral heterogeneity) or between primary and recurrent tumors (temporal tumor heterogeneity). The analyses of tumor heterogeneity have also been powered by coverage of tumor immune environment and incorporation of circulating tumor nucleic acid technology. Emerging publications have been reported above tumor heterogeneity exist in HCC, which is potentially clinically impactful.
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Affiliation(s)
- Stephen L Chan
- Department of Clinical Oncology, Sir Y.K. Pao Centre for Cancer, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China.,State Key Laboratory of Translational Oncology, The Chinese University of Hong Kong, Hong Kong, China
| | - Nathalie Wong
- State Key Laboratory of Translational Oncology, The Chinese University of Hong Kong, Hong Kong, China.,Department of Surgery at Sir Y.K. Pao Center for Cancer, The Chinese University of Hong Kong, Hong Kong, China
| | - W K Jacky Lam
- Li Ka Shing Institute of Health Sciences, Department of Chemical Pathology, The Chinese University of Hong Kong, Hong Kong, China.,Department of Chemical Pathology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Ming Kuang
- Center of Hepatopancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China.,Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
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Attili I, Passaro A, Pisapia P, Malapelle U, de Marinis F. Uncommon EGFR Compound Mutations in Non-Small Cell Lung Cancer (NSCLC): A Systematic Review of Available Evidence. Curr Oncol 2022; 29:255-266. [PMID: 35049698 PMCID: PMC8774526 DOI: 10.3390/curroncol29010024] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/15/2021] [Accepted: 01/06/2022] [Indexed: 11/16/2022] Open
Abstract
Compound epidermal growth factor receptor (EGFR) mutations represent a heterogeneous subgroup of non-small cell lung cancer (NSCLC) patients with uncommon EGFR mutations. We conducted a systematic review to investigate the available data on this patients' subgroup. Overall, we found a high heterogeneity in the incidence of compound mutations (4-26% of total EGFR mutant cases), which is dependent on the different testing methods adopted and the specific mutations considered. In addition, the relative incidence of distinct compound subclasses identified is reported with extreme variability in different studies. Preclinical and clinical data, excluding de novoEGFR exon 20 p.T790M compound mutations, show good responses with EGFR tyrosine kinase inhibitors (TKIs) (combined common mutations: response rate (RR) ≥ 75% with either first- or second-generation TKIs; combined common plus uncommon: RR 40-80% and 100% with first-generation TKIs and afatinib, respectively; combined uncommon: RR 20-70%, ~80% and ~75% with first-generation TKIs, afatinib and osimertinib, respectively). Overall, data are consistent in supporting the use of EGFR TKIs in treating compound EGFR mutations, taking into account different sensitivity profile of accompanying EGFR mutations for selecting the most adequate EGFR TKI for individual patients.
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Affiliation(s)
- Ilaria Attili
- Division of Thoracic Oncology, European Institute of Oncology, IRCCS, 20141 Milan, Italy; (I.A.); (F.d.M.)
| | - Antonio Passaro
- Division of Thoracic Oncology, European Institute of Oncology, IRCCS, 20141 Milan, Italy; (I.A.); (F.d.M.)
| | - Pasquale Pisapia
- Department of Public Health, University of Naples Federico II, 80131 Naples, Italy; (P.P.); (U.M.)
| | - Umberto Malapelle
- Department of Public Health, University of Naples Federico II, 80131 Naples, Italy; (P.P.); (U.M.)
| | - Filippo de Marinis
- Division of Thoracic Oncology, European Institute of Oncology, IRCCS, 20141 Milan, Italy; (I.A.); (F.d.M.)
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