Status:

NOT_YET_RECRUITING

Real-world Experience With Combination Chemotherapy and Osimertinib in Poor Prognostic Group of Metastatic EGFR-mutated Lung Adenocarcinoma

Lead Sponsor:

The University of Hong Kong

Conditions:

Lung Cancer (NSCLC)

Eligibility:

All Genders

18-80 years

Phase:

PHASE2

Brief Summary

The aims of this study are to determine the potential clinical benefits (in terms of PFS, objective response and OS) of add-on systemic chemotherapy (pemetrexed+carboplatin/cisplatin) to first-line os...

Detailed Description

This is a single-arm clinical trial, subjects will be consented prior to the initiation of osimertinib (as per standard-of-care) with baseline plasma ctDNA EGFR mutations tested in QMH. Those with det...

Eligibility Criteria

Inclusion

  • Adults above 18 years old, both male and female;
  • Pathologically confirmed lung adenocarcinoma with stage IIIB/C or IV disease (TNM staging version 8);
  • Confirmed EGFR common sensitizing mutations (exon 21 L858R or exon 19 del) by locally approved molecular testing methods (allele-specific PCR or NGS) based on tumour tissues or plasma ctDNA;
  • Clinically decided for first-line systemic treatment with osimertinib;
  • Detectable pre-treatment plasma EGFR mutations (by Cobas EGFR Mutation Test v2) and failed clearance 3 weeks (+/- 5 days) after osimertinib treatment;
  • At least one measurable target lesion by RECIST v1.1 criteria;
  • Performance state (ECOG) ≤ 1 and life expectancy ≥ 12 weeks;
  • Females in reproductive age with negative pregnancy test and highly effective means of contraception during and ≥ 4 months after intervention period;
  • Males should agree to have highly effective means of contraception during and ≥ 4 months after intervention period; and
  • Written informed consent obtained.

Exclusion

  • Mixed NSCLC and small cell carcinoma;
  • Prior systemic anticancer treatment (targeted therapy, chemotherapy or immunotherapy) for metastatic stage NSCLC;
  • Prior adjuvant chemotherapy or targeted therapy within 6 months;
  • Local radiotherapy within 2 weeks or major surgery within 4 weeks;
  • Inadequate haematological function (haemoglobin \< 9 g/dL, neutrophils \< 1.5 x 109/L, platelets \< 100 x 109/L), renal function (serum creatinine ≥ 1.5 x upper limit of normal (ULN) or creatinine clearance \< 45 ml/min) or liver function (total bilirubin \> 1.5 x ULN, ALT/AST/ALP \> 3 x ULN; ALT/AST/ALP \> 5 x ULN for liver metastases; ALP \> 5 x ULN for bone metastases);
  • Major medical comorbidities with significant organ dysfunction;
  • Known active hepatitis B or C infection. Chronic hepatitis B on antiviral allowed as per institutional guideline for chemotherapy;
  • Malignancies other than NSCLC; and
  • Known hypersensitivity to pemetrexed or carboplatin.

Key Trial Info

Start Date :

May 1 2025

Trial Type :

INTERVENTIONAL

Allocation :

ESTIMATED

End Date :

December 31 2027

Estimated Enrollment :

47 Patients enrolled

Trial Details

Trial ID

NCT06918782

Start Date

May 1 2025

End Date

December 31 2027

Last Update

April 9 2025

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