A case of gefitinib-associated membranous nephropathy in treatment for pulmonary adenocarcinoma

CEN Case Reports
Tomohiro KanekoShuichi Tsuruoka

Abstract

We experienced a case that was considered as gefitinib-associated membranous nephropathy (MGN) in treatment for pulmonary adenocarcinoma. A female patient aged 80 who had been treated for lung cancer was referred and hospitalized at our hospital, because of nephrotic syndrome. The patient had pulmonary adenocarcinoma (cT4N2M1a) with positive for epidermal growth factor receptor (EGFR) mutation. Gefitinib, EGFR tyrosine kinase inhibitor, was initiated from 1 year and 2 months ago. At that time, proteinuria was negative. The treatment effect on lung cancer was so favorable that partial response had been maintained. However, from 4 months ago, edema of legs appeared, leading to become nephrotic syndrome. Renal biopsy was performed, and secondary MGN was diagnosed, because of deposition of peripheral IgG, mesangial IgA, and C3, as well as the deposition of peripheral IgG4, IgG1, IgG2, and weak IgG3. We considered drug-induced MGN and discontinued the administration of gefitinib. Subsequently, the proteinuria tended to decrease gradually and became negative 10 months later. However, the lung cancer recurred 3 months after discontinuation of gefitinib and another molecular target drug, erlotinib, was administered. At present, 13 mont...Continue Reading

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Citations

Nov 16, 2019·Journal of Clinical Pharmacy and Therapeutics·Xiaodong LiuLi Zhao
May 2, 2020·World Journal of Clinical Oncology·Maria Luísa Cordeiro SantosFabrício Freire de Melo
Aug 13, 2021·BMJ Case Reports·Shahrzad ZonooziAbdallah Geara
Jul 9, 2021·Kidney Research and Clinical Practice·Min Hee Hong

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