The Role of LSD1 + 8a Isoform in SCLC Ken Tajima; Takanobu Jotatsu; Shigehiro Yagishita ...
Juntendo Medical Journal(2013-),
12/2016, Letnik:
62, Številka:
6
Journal Article
We retrospectively evaluated the survival benefit of dispensing erlotinib after gefitinib administration in patients with nonsmall cell lung cancer. Ninety patients treated with erlotinib in our ...hospital were divided into two groups: G+ group patients who were treated with erlotinib with prior gefitinib administration, and G- group patients who were treated with erlotinib without prior gefitinib administration. Median survival time (MST) in all 90 patients was 275 days. MST of 22 patients in the G+ group was shorter than that of 68 patients in G- group, but this difference was not statistically significant (283 days vs 177 days, p=0. 329). MST in 19 patients of the G+group who were administered erlotinib for over 1 month was shorter than that of 49G-group patients who were administered erlotinib over 1 month. However, this difference was also not statistically significant(395 days vs 238 days, p=0. 575). Univariate analysis demonstrated that EGFR mutation unknown, time to progression (TTP) with gefitinib longer than 1 year, gefitnib administration longer than 1 year, and responder to gefitinib, suggest a better prognosis. Mutivariate analysis revealed that only TTP with gefitinib longer than 1 year was an independent prognostic factor for patients in the G+ group.
Lenvatinib, a multitarget tyrosine kinase inhibitor for c-Kit and other kinases, has exhibited promising efficacy in treating advanced or metastatic thymic carcinoma (TC). Here, we present the case ...of a patient with metastatic TC harboring a KIT exon 11 deletion and amplification. The patient exhibited a remarkable response to lenvatinib but experienced rapid disease progression after discontinuation of lenvatinib, referred to as a "disease flare." This case report indicates that KIT mutations and amplification can predict lenvatinib response in patients with TC. However, in such cases, there might be a risk of disease flares after lenvatinib discontinuation.
This study validated real-world pharmacokinetic (PK) data using an established population PK (PopPK) model for atezolizumab in Japanese patients with NSCLC and explored the relationship between PK ...parameters, effectiveness, and adverse events (AEs) for the 1200 mg once every three weeks regimen.
A subgroup of 262 of 1039 patients from J-TAIL consented to this exploratory research for PK evaluation of atezolizumab monotherapy for unresectable advanced/recurrent NSCLC (August 2018 to October 2019; 197 institutions). We evaluated plasma concentrations before the start of the third cycle of atezolizumab infusion classified into quartiles 1 to 4, their association with effectiveness, and the association between atezolizumab maximum plasma concentrations (Cmax) calculated using the existing PopPK model and AEs of special interest (AESIs).
Overall, 175 of 262 patients were included; baseline characteristics were similar to those of patients enrolled in J-TAIL (Eastern Cooperative Oncology Group performance status ≥ 2, 12.0%; age ≥ 75 y, 28.9%; atezolizumab as more than or equal to third-line treatment, 57.5%). Atezolizumab plasma concentrations were similar to previously reported data among Japanese/non-Japanese patients. The overall survival was significantly shorter in patients with lower atezolizumab plasma concentrations in Q1 versus Q2 to Q4, although progression-free survival remained the same. The PK data adequately fit the PopPK model, with the frequency of AESIs increasing as the calculated Cmax at cycle 1 increased.
In real-world Japanese patients with unresectable advanced/recurrent NSCLC, PKs were similar to previous reports. Certain patient populations had shorter overall survival, and atezolizumab plasma concentrations in cycle 3 were lower in this population. Elevated Cmax at cycle 1 may be associated with an increased frequency of AESIs.