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Pharmacogenetic DNA Bank

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified January 2014 by National University Hospital, Singapore.
Recruitment status was:  Recruiting
Information provided by:
National University Hospital, Singapore Identifier:
First received: July 16, 2009
Last updated: January 13, 2014
Last verified: January 2014

Aims of Research Proposal:

  1. To build a DNA bank in association with a comprehensive database of treatment outcomes and toxicities of cancer patients.
  2. To carry out genotyping of potential candidate genes in relation to specific anti-cancer agents and to correlate genotype with treatment outcomes and toxicities.

The investigators hypothesize that genetic variations between different individuals and ethnic groups may account for inter-individual and inter-ethnic differences in treatment response and toxicities to anti-cancer therapy. The understanding of the contribution of these genetic variations may help to individualize therapy to optimize treatment outcomes and reduce toxicities. Patients will be recruited from the National University Hospital Cancer Centre. Any individual aged 18 or above who has been diagnosed with cancer is eligible. 20 ml of blood will be collected from each subject for DNA extraction and pharmacogenetics analysis. At the time of recruitment, demographic characteristics, cancer history, and past and present cancer treatment history of the study subject will be collected. The patients' progress will be followed up periodically (approximately every 6 months) through the medical records, and subsequent cancer treatments, progression of cancer, and survival outcome will be updated. Follow-up will occur until death. Important treatment information that will be collected include the drug regimen, drug doses, intent of treatment, aematologic and non-haematologic toxicities, and hospitalization episodes that may be related to treatment. Known functional single nucleotide polymorphisms (SNPs) of drug metabolizing enzymes, transporters and targets of different anti-cancer agents will be characterized. More comprehensive genotyping will be carried out in 'outliers' who experience exceptional toxicity or biological response to identify novel functional SNPs using high throughput sequencing techniques. Correlation will be made between genotype and treatment-related outcomes (tumor response, progression-free survival) and toxicities. For selected patients, lymphoblastoid transformation will be carried out to maintain an infinite supply of DNA.

Condition Intervention
Cancer Biological: Blood collection

Study Type: Observational
Study Design: Observational Model: Case-Crossover
Time Perspective: Cross-Sectional
Official Title: Pharmacogenetic DNA Bank

Further study details as provided by National University Hospital, Singapore:

Biospecimen Retention:   Samples With DNA
Blood sample

Estimated Enrollment: 5000
Study Start Date: April 2009
Estimated Study Completion Date: December 2015
Estimated Primary Completion Date: December 2015 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
Blood collection Biological: Blood collection


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Any individual who has been diagnosed with cancer is eligible.

Inclusion Criteria:

  • Any cancer patient who is aged >=18 is eligible.

Exclusion Criteria:

  • Cancer patients who are below age 18 will be excluded.
  Contacts and Locations
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Please refer to this study by its identifier: NCT00941200

Contact: Soo Chin Lee, MBBS, MRCP 65 6772 4629

National University Hospital Recruiting
Singapore, Singapore, 119074
Contact: Soo Chin Lee, MBBS, MRCP    65 6772 4629   
Principal Investigator: Soo Chin Lee, MBBS, MRCP         
Sponsors and Collaborators
National University Hospital, Singapore
Principal Investigator: Soo Chin Lee, MBBS, MRCP National University Hospital, Singapore