Serial ultra ‐deep sequencing of circulating tumor DNA reveals the clonal evolution in non‐small cell lung cancer patients treated with anti‐PD1 immunotherapy

ConclusionThis pilot study showed that MSAF could be another good indicator of therapeutic response, and clonal analysis could be clinically useful in monitoring clonal dynamics and detecting remote metastasis and early relapse.
Source: Cancer Medicine - Category: Cancer & Oncology Authors: Tags: ORIGINAL RESEARCH Source Type: research

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Objective: Anti-PD-1 antibodies can cause drug-induced pneumonitis. We aimed to identify the clinical and radiologic characteristics, the incidence, risk factors, and appropriate management of pneumonitis related to anti-PD-1 immunotherapy in patients with non-small cell lung cancer (NSCLC).Materials and Methods: Medical records and chest computed tomography scans of patients with NSCLC treated with anti-PD-1 antibodies between January 2016 and June 2018 at the Kanagawa Cancer Center were retrospectively analyzed. Clinical characteristics of patients treated with anti-PD-1 antibodies who developed pneumonitis were compared...
Source: European Respiratory Journal - Category: Respiratory Medicine Authors: Tags: Lung cancer Source Type: research
CONCLUSION: A history of asthma may be associated with a higher grade of pneumonitis if it develops, and a history of smoking may augment this relationship. PMID: 31665718 [PubMed - as supplied by publisher]
Source: Oncology - Category: Cancer & Oncology Authors: Tags: Oncology Source Type: research
Conclusion: This first-in-human study demonstrates that 99mTc-labeled anti–PD-L1-single-domain antibody SPECT/CT imaging is safe and associated with acceptable dosimetry. Tumor uptake is readily visible against background tissues, particularly at 2 h when the T:BP ratio correlates with PD-L1 immunohistochemistry results.
Source: Journal of Nuclear Medicine - Category: Nuclear Medicine Authors: Tags: Clinical Source Type: research
We report on a case of pseudoprogression, which was presented as intestinal perforation after pembrolizumab immunotherapy for NSCLC. A-54-year-old man with stage IV NSCLC received pembrolizumab therapy. The patient was admitted to our hospital because of acute abdominal pain and the computed tomography scan revealed diffuse wall thickening of the small bowel with free intraperitoneal air. Intestinal perforation was suspected and surgical resection was performed. Histological evaluation of the resected specimen showed infiltrated lymphocytes positive for CD3, CD8 with necrotic tumor cells, suggestive of an immune reaction. ...
Source: Clinical Lung Cancer - Category: Cancer & Oncology Authors: Tags: Mol Clin Oncol Source Type: research
In a study led by UCLA investigators, treatment with the immunotherapy drug pembrolizumab helped more than 15% of people with advanced non-small cell lung cancer live for at least five years — and 25% of patients whose tumor cells had a specific protein lived at least that long.When the study began in 2012, the average five-year survival rate was just 5.5%  for people with that type of cancer.The study, conducted by researchers at theUCLA Jonsson Comprehensive Cancer Center and more than 30 other centers, was the first to evaluate pembrolizumab as a treatment for lung cancer. The results were featured in aJune 1...
Source: UCLA Newsroom: Health Sciences - Category: Universities & Medical Training Source Type: news
ConclusionsThe findings indicate that the PERCIST-based evaluation could identify progressive disease earlier. Early identification of nonresponders could lead to prevention of overtreatment and to an early switch to a  more effective therapy.
Source: Memo - Magazine of European Medical Oncology - Category: Cancer & Oncology Source Type: research
Conclusions: This first in human study demonstrates that 99mTc-labeled anti-PD-L1-sdAb SPECT/CT imaging is safe and associated with acceptable dosimetry. Tumor uptake is readily visible against background tissues, particularly at 2h when the T:BP ratio correlates with IHC PD-L1 expression.
Source: Journal of Nuclear Medicine - Category: Nuclear Medicine Authors: Tags: Lung Cancer I: Molecular Biomarkers and Molecular Imaging Signatures Source Type: research
Conclusions: Hypermetabolic changes on DTP 18F-FDG PET showed good correlation with tumor positive expression of PD-L1 and high density of CD8 TILs and PD-1 in tumor immune microenvironment. Furthermore, dSUVmax was an independent predictor of PD-L1 expression in pretreated NSCLC.
Source: Journal of Nuclear Medicine - Category: Nuclear Medicine Authors: Tags: Lung Cancer I: Molecular Biomarkers and Molecular Imaging Signatures Source Type: research
Researchers at Osaka University in Japan have identified a key component of physical health associated with response to immunotherapy drugs. Among people with non-small cell lung cancer, higher levels of muscle mass predicted a better response to PD-1 inhibitor immunotherapy. Sarcopenia — the term used to describe low muscle mass levels — appears to reduce the benefits a person receives from immunotherapy cancer treatment. “Sarcopenia at baseline is a significant predictor of worse outcome in patients with advanced NSCLC [non-small cell lung cancer] receiving PD-1 blockade,” the study investigators ...
Source: Asbestos and Mesothelioma News - Category: Environmental Health Authors: Source Type: news
Doctors in China may have uncovered an effective second- or third-line treatment option for patients with malignant pleural mesothelioma. Dr. RongQin Meng, an oncologist at 363 Hospital in Cheng Du, said the investigational drug Apatinib (rivoceranib) could become part of a much-needed advance in mesothelioma treatment. After first- and second-line chemotherapy combinations had failed to slow tumor growth in a 58-year-old woman, Apatinib provided a five-month progression-free survival. “I was surprised at the result,” Meng told The Mesothelioma Center at Asbestos.com. “After taking the drug, the quality o...
Source: Asbestos and Mesothelioma News - Category: Environmental Health Authors: Source Type: news
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