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BAŞOĞLU TÜYLÜ, TUĞBA

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    QT interval prolongation related to afatinib treatment in a patient with metastatic non-small-cell lung cancer
    (MOSBY-ELSEVIER, 2020) KOCAKAYA, DERYA; Demircan, Nazim Can; Telli, Tugba Akin; Tuylu, Tugba Basoglu; Arikan, Rukiye; Kocakaya, Derya; Sahin, Ahmet Anil; Ercelep, Ozlem; Dane, Faysal; Yumuk, Perran Fulden
    Afatinib improves survival in metastatic non-small-cell lung cancer driven by activating epidermal growth factor receptor mutations. QT interval prolongation is a possible side effect of tar geted anticancer drugs, but this has not been reported before with afatinib. We report a case of metastatic pulmonary adenocarcinoma with epidermal growth factor receptor exon 19 deletion who was treated with first-line afatinib. The patient was started on afatinib with a total dose of 40 mg/day and experienced grade 3 (> 500 ms) QT interval prolongation in the seventh week. Dose was interrupted and then reduced to 30 mg/day after the event repeated. QT prolongation occurred only once with the reduced dose and radiologic oligoprogression was detected. Local therapy was performed and afatinib was continued as 30 mg/day. To the best of our knowledge, this case marks the first QT interval prolongation associated with afatinib. It is prudent to perform a baseline cardiologic evaluation and electrocardiogram monitoring in non-small cell lung cancer patients treated with this drug. (c) 2020 Elsevier Inc. All rights reserved.
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    The real-life efficacy and safety of osimertinib in pretreated advanced non-small cell lung cancer patients with T790M mutation: a Turkish Oncology Group Study
    (SPRINGER) YUMUK, PERRAN FULDEN; Hizal, Mutlu; Bilgin, Burak; Paksoy, Nail; Acikgoz, Ozgur; Sezer, Ahmet; Gurbuz, Mustafa; Ak, Naziye; Yucel, Sebnem; Ayhan, Murat; Erol, Cihan; Demirkiran, Aykut; Mandel, Nil Molinas; Shbair, Abdallah; Gokmen, Ivo; Basoglu, Tugba; Paydas, Semra; Demiray, Atike Gokcen; Iriagac, Yakup; Sakalar, Teoman; Zeynelgil, Esra; Tatli, Ali Murat; Bahceci, Aykut; Guven, Deniz Can; Caner, Burcu; Can, Alper; Gulmez, Ahmet; Karakas, Yusuf; Yalcin, Bulent; Demirkazik, Ahmet; Bilici, Ahmet; Aydiner, Adnan; Yumuk, Perran Fulden; Sendur, Mehmet Ali Nahit
    Introduction Osimertinib, an irreversible third-generation EGFR-TKI, is the standard of care for second-line treatment of T790M-mutant advanced NSCLC patients whose disease progressed after first-line EGFR-TKI therapy. In this multicenter study, we aimed to determine the real-life efficacy and safety of Osimertinib in pretreated advanced NSCLC patients with T790M mutation. Materials and methods This retrospective trial included advanced T790M-mutant pretreated NSCLC patients who received Osimertinib from 24 different centers in Turkey. Primary endpoint was time-to-treatment discontinuation (TTD). Secondary endpoints were objective response rate (ORR), overall survival (OS), and safety. Results Of 163 patients, 68.7% had EGFR exon 19 deletion and 22.7% had exon 21 L858R mutation. Osimertinib was given as second-line treatment in 96 patients (58.9%) and third-line in 48 patients (29.4%). After median of 13-month follow-up, median TTD was 21.6 months with an 82.2% ORR. Estimated median OS was 32.1 months. Grade 3-4 adverse events were seen in 11.7% of the patients. Conclusion Osimertinib is a highly effective option in second- or third-line treatment of NSCLC patients with T790M mutation, with a favorable safety profile.