Decisions to continue or suspend therapy with immune checkpoint inhibitors are commonly guided by tumor dynamics seen on serial imaging. However, immunotherapy responses are uniquely challenging to interpret because tumors often shrink slowly or can appear transiently enlarged due to inflammation. We hypothesized that monitoring tumor cell death in real time by quantifying changes in circulating tumor DNA (ctDNA) levels could enable early assessment of immunotherapy efficacy. We compared longitudinal changes in ctDNA levels with changes in radiographic tumor size and with survival outcomes in 28 patients with metastatic non-small cell lung cancer (NSCLC) receiving immune checkpoint inhibitor therapy. CtDNA was quantified by determining the allele fraction of cancer-associated somatic mutations in plasma using a multigene next-generation sequencing assay. We defined a ctDNA response as a >50% decrease in mutant allele fraction from baseline, with a second confirmatory measurement. Strong agreement was observed between ctDNA response and radiographic response (Cohen's kappa, 0.753). Median time to initial response among patients who achieved responses in both categories was 24.5 days by ctDNA versus 72.5 days by imaging. Time on treatment was significantly longer for ctDNA responders versus nonresponders (median, 205.5 vs. 69 days; < 0.001). A ctDNA response was associated with superior progression-free survival [hazard ratio (HR), 0.29; 95% CI, 0.09-0.89; = 0.03], and superior overall survival (HR, 0.17; 95% CI, 0.05-0.62; = 0.007). A drop in ctDNA level is an early marker of therapeutic efficacy and predicts prolonged survival in patients treated with immune checkpoint inhibitors for NSCLC. .
We sought to evaluate the frequency of anxiety, depression, PTSD, and any experiences of violence in women who had undergone Female Genital Mutilation/Cutting (FGM/C) and were seeking asylum in the United States. We undertook a retrospective qualitative descriptive study of FGM/C cases seen in an asylum clinic over a 2-year period. Standardized questionnaires provided quantitative scores for anxiety, depression and PTSD. Clients' personal and physician medical affidavits were analyzed for experiences of violence. Of the 13 cases, anxiety and depression were exhibited by 92 and 100% of women, while all seven women screened for PTSD had symptoms. Qualitative analysis revealed extensive violence perpetrated against these women, demonstrating that FGM/C is only part of the trauma experienced. The high level of mental health disorders and endured violence has implications for providers working with FGM/C survivors and indicates the need for accessible mental health services and trauma-informed care.
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