Case report: complete pathologic response to neoadjuvant ensartinib in locally advanced, ALK-positive lung squamous cell carcinoma - Report - MDSpire

Case report: complete pathologic response to neoadjuvant ensartinib in locally advanced, ALK-positive lung squamous cell carcinoma

  • By

  • Yingyu Yang

  • Junkai Zhang

  • Zhirun Xie

  • Sirui Zhang

  • May 25, 2026

  • 0 min

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Clinical Report: Complete Pathological Response to Neoadjuvant Ensartinib

Overview

This case study presents the first documented instance of a stage IIIB ALK-positive lung squamous cell carcinoma achieving complete pathological response following neoadjuvant treatment with ensartinib. The patient exhibited significant tumor shrinkage and underwent successful surgical resection with no evidence of recurrence at 12 months post-operation.

Background

ALK-positive lung squamous cell carcinoma (LSCC) is rare, with an incidence of less than 1%. The efficacy of neoadjuvant ALK inhibitors like ensartinib in this context has not been extensively studied. Given the poor prognosis associated with ALK rearrangements, exploring targeted therapies in the neoadjuvant setting is crucial for improving outcomes in this patient population.

Data Highlights

No numerical data or trial data presented in the article.

Key Findings

  • The patient was a 65-year-old female diagnosed with stage IIIB ALK-positive LSCC.
  • Neoadjuvant treatment with ensartinib led to a rapid partial response after four weeks.
  • After eight weeks of treatment, the tumor was downstaged to a resectable status.
  • Postoperative examination confirmed a complete pathological response with no tumor cells detected.
  • The patient received adjuvant ensartinib and showed no evidence of recurrence at 12 months follow-up.

Clinical Implications

This case suggests that neoadjuvant ensartinib may be a viable treatment option for patients with locally advanced, resectable ALK-positive LSCC. Further studies are warranted to establish the broader applicability of this approach.

Conclusion

The successful outcome in this case highlights the potential of neoadjuvant ensartinib in treating ALK-positive LSCC, warranting further investigation into its role in clinical practice.

Related Resources & Content

  1. The ASCO Post, 2018 -- New Data Reported From International Studies of Lung Cancer Treatment
  2. Drugs - Real World Outcomes, 2020 -- Analysis of Treatment Sequences and Outcomes in ALK-Positive Non-Small Cell Lung Cancer Patients Undergoing ALK-Inhibitor Therapy: A Retrospective Observational Study
  3. Drugs - Real World Outcomes, 2016 -- Lung Adenocarcinoma with ALK Rearrangement Manifesting as Carcinoma of Unknown Origin: Implications for Diagnosis and Treatment
  4. The ASCO Post, 2019 -- Neoadjuvant Immunotherapy May Benefit Patients With Early-Stage NSCLC
  5. Clinical features of squamous cell lung cancer with anaplastic lymphoma kinase (ALK)-rearrangement: a retrospective analysis and review - PMC
  6. FDA approves alectinib as adjuvant treatment for ALK-positive non-small cell lung cancer | FDA
  7. Therapy for Stage IV Non–Small Cell Lung Cancer With Driver Alterations: ASCO Living Guideline, Version 2024.3 | Journal of Clinical Oncology
  8. Clinical features of squamous cell lung cancer with anaplastic lymphoma kinase (ALK)-rearrangement: a retrospective analysis and review - PMC
  9. FDA approves alectinib as adjuvant treatment for ALK-positive non-small cell lung cancer | FDA
  10. Therapy for Stage IV Non–Small Cell Lung Cancer With Driver Alterations: ASCO Living Guideline, Version 2024.3 | Journal of Clinical Oncology

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