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NCT Number: NCT07145333

Pharmacogenomics ANDA SNP Clinical Study - Topotecan and Single Nucleotide Polymorphisms

Explore the relationship between drug target topoisomerase I gene single nucleotide polymorphisms and Topotecan therapeutic-effects in patients with small cell lung cancer, based on Oxford precisely sequencing drug targets' genes.

Explore the relationship between drug target CYP4503A4 gene single nucleotide polymorphisms and Topotecan side-effects in patients with small cell lung cancer, based on Oxford precisely sequencing drug targets' genes.

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This study is active but is not currently recruiting participants.

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Key information

Conditions

Age range

24 year–64 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2 / Phase 3

Primary location

Medicine Invention Design Incorporation

Rockville, Maryland, 20853, United States

About this study

The usual approach group, after lung tissue biopsy, 300 double blind random group separated SCLC patients currently used the Chemotherapy on Topotecan capsule, it will try to look for the relationship between the Topotecan therapeutic efficacy and the Topoisomerase I SNP Genotyping, and the relationship between the Topotecan therapeutic safety and the CYP4503A4 SNP Genotyping, based on Oxford precisely sequencing drug targets' genes.

The study approach group, after lung tissue biopsy, 300 double blind random group separated SCLC patients currently used the Chemotherapy on China Import Topotecan Capsule, it will try to look for the relationship between the Topotecan therapeutic efficacy and the Topoisomerase I SNP Genotyping, and the relationship between the Topotecan therapeutic safety and the CYP4503A4 SNP Genotyping, based on Oxford precisely sequencing drug targets' genes.

  • Detect drug target whole gene precision sequence of everyone patient for all 600 recruited double blind SCLC patients.
  • Mutually compare everyone patient drug target whole gene precision sequence for a total of 600 recruited double blind SCLC patients.
  • Calculate drug target gene SNPs in all 600 recruited double blind SCLC patients.
  • Correlate everyone patient drug target gene SNP to everyone patient drug efficacy.
  • Correlate everyone patient drug target gene SNP to everyone patient drug safety.
  • Mutually compare the usual approach group SNPs (300 double blind random group separated SCLC patients) with the study approach group SNPs (300 double blind random group separated SCLC patients).
  • Confirm the relationship between drug target gene SNPs and drug efficacy.
  • Confirm the relationship between drug target gene SNPs and drug safety.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

  • Select 600 Small Cell Lung Cancer Patients who are suitable for lung tissue biopsy
  • Dosage Duration at least 45 days
  • The usual approach group - Recruit 300 double blind random group separated SCLC patients currently used the Chemotherapy on Topotecan Capsule after lung tissue biopsy, like as the usual approach group.
  • The study approach group - Recruit 300 double blind random group separated SCLC patients currently used the Chemotherapy on China Import Topotecan Capsule after lung tissue biopsy, like as the study approach group.

Inclusion criteria

  • 1. Clinical diagnosis of Small Cell Lung Cancer (SCLC)
  • 2. Clinical lung tissue biopsy diagnosis of SCLC
  • 3. Suitable for enough lung tissue biopsy of SCLC
  • 4. Random and double blind
  • 5. Measurable disease
  • 6. Adequate organ functions
  • 7. Adequate performance status
  • 8. Age 24 years old and over
  • 9. Sign an informed consent form
  • 10. Receive blood-drawing

Exclusion criteria

  • 1. Pneumonectomy
  • 2. Treatment with other anti-cancer therapies and cannot be stopped currently
  • 3. Pregnancy
  • 4. Breast-feeding
  • 5. The patients with other serious intercurrent illness or infectious diseases
  • 6. Have more than one different kind of cancer at the same time
  • 7. Serious Allergy to Drugs
  • 8. Clot or Bleed Tendency
  • 9. Serious Risks or Serious Adverse Events of the drug product
  • 10. The prohibition of drug products
  • 11. Have no therapeutic effects
  • 12. Follow up to the most current label

Treatment and study plan

Topotecan - usual

Drug

Topotecan Capsule

Other names: Usual Topotecan Capsule Chemotherapy

Topotecan - study

Drug

China Import Topotecan Capsule

Other names: Study Topotecan Capsule Chemotherapy

Primary outcomes

  1. Find Topotecan Drug Targets' SNP Genotypes which are effectiveness-associated, and which are risk-associated.

    Time frame: Duration up to 14 weeks

    • Recruit 300 double blind random group separated SCLC patients currently used the Chemotherapy on Topotecan Capsule after lung tissue biopsy, like as the usual approach group.
    • Recruit 300 double blind random group separated SCLC patients currently used the Chemotherapy on China Import Topotecan Capsule after lung tissue biopsy, like as the study approach group.
    • Assay above every SCLC patient-specific Topotecan drug target (Topoisomerase I) SNP genotype in his or her WBC cell whole genome DNA with Oxford precisely sequencing.
    • Assay above every SCLC patient-specific Topotecan drug target (CYP4503A4) SNP genotype in his or her WBC cell whole genome DNA with Oxford precisely sequencing.

Sponsors and collaborators

Lead sponsor

Han Xu, M.D., Ph.D., FAPCR, Sponsor-Investigator, IRB Chair

Industry

Collaborators

  • UnitedHealthcare

Registry information

Official study title

Explore the Relationship Between Single Nucleotide Polymorphisms and Topotecan Response and Toxicity in Patients With Small Cell Lung Cancer.

Acronym: Drug-SNP

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Aug 28, 2025
Registry last updated
Sep 8, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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