A 69-Year Old Man With Metastatic BRAF V600E-Mutated Metastatic NSCLC

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A 69-Year Old Man With Metastatic BRAF V600E-Mutated Metastatic NSCLC

Case: A 69-Year Old Man With MetastaticBRAFV600E—Mutated Metastatic NSCLC

Initial presentation

  • A 69-year old man presented with a chronic dry cough and dyspnea on exertion
  • PMH: history of hypercholesterolemia, medically treated; 20 pack-year smoking history, quit 6 years ago
  • PE: decreased breath sounds on auscultation

Clinical workup

  • Labs: WNL
  • Chest X-ray showed a ~4-cm
  • Chest/abdomen/pelvic CT showed a 3.7-cm solid pulmonary lesion in the right lobe, ipsilateral mediastinal and subcarinal lymph node involvement
  • Bronchoscopy biopsy of the lung lesion and lymph nodes revealed lung adenocarcinoma
  • Contrast-enhanced MRI of the head showed a small brain lesion
  • Molecular and biomarker testing:
    • PD-L1 TPS 20%
    • EGFR-, ALK-,BRAFV600E+,ROS1-
  • Stage T2aN2M1b; ECOG PS 0

Treatment and Follow-Up

  • Patient started on dabrafenib 150 mg PO qDay BID + trametinib 2 mg PO qDay; achieved partial response
    • Patient developed intermittent grade 1 fatigue, which was tolerable; continued treatment
  • Imaging at 3, 6 and 9 months showed sustained partial response
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