An advanced pulmonary sarcomatoid carcinoma patient harboring a BRAF^V600E mutation responds to dabrafenib and trametinib: a case report and literature review.

ABSTRACT:

Background

The pulmonary sarcomatoid carcinoma (PSC) is a rare and aggressive subtype of NSCLC with rapid progression and poor prognosis, and is resistant to conventional chemotherapy. Most PSC cases have potential targetable genomic alterations. Approximately 7% of PSC patients have BRAF mutations, and the efficacy of dabrafenib and trametinib in BRAF^V600E mutated PSC is unclear.

Case presentation

Our report describes a patient with mutated BRAF^V600E PSC who underwent surgery and adjuvant chemotherapy early but quickly relapsed. Both chemotherapy and immunotherapy were ineffective for him, combined dabrafenib and trametinib produced a 6-month progression-free survival, and a partial response was observed in the tumor response evaluation. As a result of financial pressure, he stopped taking the targeted drugs, and his disease rapidly progressed.

Conclusion

Dabrafenib combined with trametinib provides partial remission in patients with advanced PSC with BRAF^V600E mutations, and large-scale NGS panels could offer more options for PSC treatment.

SUBMITTER: Fang R 

PROVIDER: S-EPMC10403232 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature