2020
DOI: 10.1177/0300891620973262
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Transformation of advanced lung adenocarcinoma to acquired T790M resistance mutation adenosquamous carcinoma following tyrosine kinase inhibitor: a case report

Abstract: Background: Epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) are recommended for patients with non-small cell lung cancer with EGFR mutations. However, acquired resistance to EGFR-TKIs seems inevitable and the mechanism of drug resistance has not been fully defined. There is no effective treatment for patients with advanced lung adenocarcinoma who are resistant to TKIs owing to pathologic type conversion. Case presentation: We report a patient who was initially diagnosed with lung aden… Show more

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Cited by 6 publications
(3 citation statements)
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“…Adeno-squamous transformation, a change in histology from adenocarcinoma to squamous cell carcinoma, has been observed in two (22%) of nine patients with KRAS G12C -mutant NSCLC following acquired resistance to adagrasib, in the absence of genomic resistance mechanisms described previously 106 . Similar histological transformation has been associated with resistance to EGFR inhibitors 119,120 .…”
Section: Emt and Adeno-squamous Transformationmentioning
confidence: 56%
“…Adeno-squamous transformation, a change in histology from adenocarcinoma to squamous cell carcinoma, has been observed in two (22%) of nine patients with KRAS G12C -mutant NSCLC following acquired resistance to adagrasib, in the absence of genomic resistance mechanisms described previously 106 . Similar histological transformation has been associated with resistance to EGFR inhibitors 119,120 .…”
Section: Emt and Adeno-squamous Transformationmentioning
confidence: 56%
“…Combined with chemotherapy, it can play a synergistic role, improve the immune function of patients and promote the anti-tumor effect. 26,27 The results of this study also show that EGFR-TKI targeted combined chemotherapy is associated with improved levels of tumor markers and improved treatment effect. Xu A et al 28 showed that EGFR-TKI targeted therapy applied to patients with advanced EGFR mutant NSCLC can downregulate the levels of CEA, CYFRA21-1 and MMP-9, effectively inhibit angiogenesis and enhance the immune function of patients.…”
Section: Discussionmentioning
confidence: 53%
“…EGFR -TKIs are recommended for patients with NSCLC having EGFR mutations ( 10 ). Data regarding treatment effectiveness for EGFR -TKIs in NSCLC patients with non-resistant, uncommon EGFR mutations are limited.…”
Section: Discussionmentioning
confidence: 99%