Lineage plasticity and immune invisibility in primary SCLC and LUAD-to-SCLC transformation: antigen presentation loss and therapeutic redirection - Scorecard - MDSpire
Coming Soon: Introducing MDSpire News. Learn more
Conexiant’s news site is now MDSpire News. Learn more

Plasticity of Lineage and Immune Evasion in Primary SCLC and Transformation from LUAD to SCLC: Loss of Antigen Presentation and Shifts in Therapeutic Strategies

  • By

  • Hongying Xu

  • Benhua Li

  • Jun Yang

  • Xin Tang

  • September 4, 2026

Share

Clinical Scorecard: Plasticity of Lineage and Immune Evasion in Primary SCLC and Transformation from LUAD to SCLC: Loss of Antigen Presentation and Shifts in Therapeutic Strategies

At a Glance

CategoryDetail
ConditionSmall Cell Lung Cancer (SCLC)
Key MechanismsLineage plasticity and impaired MHC-I antigen processing and presentation
Target PopulationPatients with primary SCLC and those with transformation from EGFR-mutant LUAD to SCLC
Care SettingOncology

Key Highlights

  • Lineage plasticity contributes to immune resistance in SCLC.
  • Impaired MHC-I antigen presentation leads to 'immune invisibility'.
  • Chemoimmunotherapy is established for extensive-stage SCLC.
  • Transformation from LUAD to SCLC may affect immune response.
  • Durable benefits from immune checkpoint inhibitors in SCLC remain limited.

Guideline-Based Recommendations

Diagnosis

  • Assess lineage plasticity and antigen presentation capacity.

Management

  • Consider chemoimmunotherapy for extensive-stage SCLC.
  • Investigate DLL3-directed T-cell engagement for previously treated disease.

Monitoring & Follow-up

  • Monitor for changes in lineage state and antigen presentation.

Risks

  • Limited efficacy of immunotherapy in transformed SCLC and neuroendocrine tumors.

Patient & Prescribing Data

Patients with SCLC and those with LUAD transformation

Responses to PD-1/PD-L1 blockade are low in EGFR-mutant and ALK-rearranged NSCLC.

Clinical Best Practices

  • Evaluate tumor mutational burden and PD-L1 expression.
  • Consider T-cell infiltration and tumor microenvironment factors.

Related Resources & Content

Original Source(s)

Related Content