3 research outputs found
Severe esophagitis directly induced by accumulation of crizotinib-residue at the esophageal mucosa proven with polarizing microscope examination
Crizotinib demonstrates dramatic effects for the patients with echinoderm microtubule-associated protein-like 4 (EML4)-anaplastic lymphoma kinase gene (ALK) fusion or c-ros oncogene 1 (ROS-1) fusion-positive lung cancer, with some characteristic toxicities. Although several studies reported that serious esophagitis was induced by crizotinib, the detailed mechanisms and ways to ameliorate the esophagitis have not been clarified. In this report, we report two cases with lung cancer who had been treated with crizotinib and developed severe esophagitis. Polarizing microscope examination clearly revealed that the accumulation of crizotinib-residue in the esophageal biopsy samples at the second anatomical narrowing of the esophagus in both cases. Since it seemed that the accumulation of crizotinib-residue in the esophageal mucosa directly caused the esophageal inflammation, we recommended taking crizotinib with a large amount of water (more than 200 ml) and to stay sitting upright for 30 minutes after intake. After that, the esophagitis gradually improved and the patients could continue taking crizotinib without dose reduction or withdrawal. Our experiences suggest that this crizotinib-induced esophagitis could be easily prevented by proper administration of crizotinib
Severe esophagitis directly induced by accumulation of crizotinib-residue at the esophageal mucosa proven with polarizing microscope examination
Phase II study of IRInotecan treatment after COmbined chemoâimmunotherapy for extensiveâstage small cell lung cancer: Protocol of IRICO study
Abstract Introduction Combined treatment using antiâprogrammed deathâligand 1 antibody (antiâPDâL1) and platinumâetoposide is the current standard firstâline treatment for patients with extensiveâstage (ES) small cell lung cancer (SCLC). However, the best treatment for relapsed ESâSCLC after the firstâline treatment remains unclear. There are some approved chemotherapeutic agents that can be used against ESâSCLC, and treatment with irinotecan is well established as both a monotherapy and a combined therapy, in combination with platinum. Therefore, we conduct a phase II study with irinotecan in the secondâ or laterâline setting for patients with ESâSCLC who have been previously treated with combined treatment. Methods Our study will enroll total 30 patients who are diagnosed with ESâSCLC and have experienced disease progression after the combined treatment. Patients will receive irinotecan on days 1, 8, and 15, which will be repeated every 4âweeks. Doses of irinotecan (100/80/60âmg/m2) will be determined according to the type of UGT1A1 gene polymorphism, and the treatment will be discontinued following disease progression, intolerance, withdrawal of patient consent, and based on the investigator's decision. The primary endpoint of the study is the response rate, and the secondary endpoints are overall survival, progressionâfree survival, and safety. Discussion Since the present firstâline treatment has been changed to the combined treatment, the secondâ or laterâline treatment should be reâevaluated for patients with relapsed SCLC. Irinotecan is a major chemotherapeutic agent used for SCLC. This study demonstrates and reâevaluates the clinical benefits of irinotecan after combined treatment with antiâPDâL1 and platinumâetoposide for patients with ESâSCLC. Registration details This study was registered in the Japan Registry of Clinical Trials (no. jRCT s071210090) on November 4, 2021