ArticleBJR open2019
Biopsy of palliative lesions following radiotherapy.
Article in BJR open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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0 citing papers in PubMed, 0 citations in OpenAlex.
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveDefinite radiotherapy and/or chemoradiotherapy is often conducted for the treatment of non-small cell lung cancer. However, there is a potential concern regarding the mutagenic effects on tumor cells derived from the therapies, and genomic information regarding cancer cells that survived definitive radiotherapy/chemoradiotherapy is lacking. To evaluate the mutagenic effect of radiotherapy/chemoradiotherapy, we compared genomic signatures of recurrent non-small cell lung cancer tissue with those of pre-treatment.
methodsWe evaluated seven specimens from three patients who developed disease recurrence after definite radiotherapy/chemoradiotherapy, and we ranked the mutations according to the Combined Annotation-Dependent Depletion score.
resultsSome mutations remained in the post-therapy state, and others, including driver mutations, either newly occurred or disappeared during the course of disease. Of the four specimens obtained in the post-radiation period, 21 variants were detected. Compared with single nucleotide substitution (5, 23.8%), substantial number of deletions (16, 76.2%) was observed in specimens obtained after definite radiotherapy/chemoradiotherapy.
conclusionRadiotherapy/chemoradiotherapy effects on tumor cells have a wide spectrum, and resequencing of a recurrent lesion is always recommended to discuss the best course of therapy for recurrent non-small cell lung cancer after definitive radiotherapy/chemoradiotherapy. ADVANCES IN KNOWLEDGE: With regard to cancer cells that survived definitive radiotherapy/chemoradiotherapy, some mutations remained in the post-therapy state, and others, including driver mutations, either newly occurred or disappeared during the course of disease. Compared with single nucleotide substitution, substantial number of deletions was observed in specimens obtained after definite radiotherapy/chemoradiotherapy.
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