A Study to Investigate the Efficacy and Safety of Trastuzumab Deruxtecan as the First Treatment Option for Unresectable, Locally Advanced/Metastatic Non-Small Cell Lung Cancer With HER2 Mutations

Participation Requirements

• Sex:

  ALL

• Eligible Ages:

  18 and up

Participation Criteria

Inclusion Criteria:

* Participants at least 18 years of age
* Locally advanced and unresectable NSCLC, not amenable to curative therapy, or metastatic disease
* Histologically documented non-squamous NSCLC with HER2 mutation in exons 19 or 20 by tissue NGS or ctDNA
* Treatment-naïve for palliative intent systemic therapy for locally advanced or metastatic disease
* Left ventricular ejection fraction (LVEF) ≥ 50%
* Measurable disease assessed by Investigator based on RECIST 1.1
* Protocol-defined adequate organ function including cardiac, renal, hepatic function
* ECOG 0-1
* Having tumour tissue available for central testing

Exclusion Criteria:

* Tumors with targetable alterations to EGFR (or other targetable mutations including but not limited to ALK, if routinely tested as a targetable alteration with approved available therapy)
* Any untreated brain metastases, including asymptomatic or clinically inactive brain metastases
* Active autoimmune or inflammatory disorders
* Medical history of myocardial infarction within 6 months prior to randomization
* History of non-infectious pneumonitis/ILD, current or suspected ILD
* Lung-specific intercurrent clinical significant severe illness
* Contraindication to platinum-based doublet chemotherapy or pembrolizumab