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OpenTrials
Completed

NCT Number: NCT03040492

Vitamin D Receptor Polymorphisms and Non-Melanoma Skin Cancer Risk

The purpose of this study is to discover whether certain Vitamin D Receptor (VDR) gene polymorphisms are associated with an increased risk of cutaneous basal cell carcinoma (BCC) and/or cutaneous squamous cell carcinoma (SCC) in an Alabama population. Participant demographic information such as physical characteristics (e.g., ethnicity), family history, and cancer diagnosis will be collected in order to determine if there are relationships between the gene polymorphisms, cancer diagnosis, and these characteristics.

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Key information

Age range

50 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

The Kirklin Clinic

Birmingham, Alabama, 35294, United States

About this study

The purpose of this study is to discover whether certain Vitamin D Receptor (VDR) gene polymorphisms are associated with an increased risk of cutaneous basal cell carcinoma (BCC) and/or cutaneous squamous cell carcinoma (SCC) in an Alabama population. Participant demographic information such as physical characteristics (e.g., ethnicity), family history, and cancer diagnosis will be collected in order to determine if there are relationships between the gene polymorphisms, cancer diagnosis, and these characteristics. By identifying the VDR polymorphisms for the Apa1, Taq1, Bsm1, and Fok1 genes within the participant population and comparing the genotypes to controls, the investigators hope to demonstrate which gene polymorphisms indicate an increased risk for SCC or BCC.

Inclusion- patients with a non-melanoma skin cancer. Participants must be 50 years old or older. Controls- patients without non-melanoma skin cancer and who have no family history of skin cancer. They must also be 50 years old or older; Inclusion for both groups- English speakers and patients at the Kirklin Clinic during the months of our data collection. Exclusion criteria will be patients younger than 50 years old or who have a diagnosis of melanoma or other type of cancer, or who are non-English speakers.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Patients with non-melanoma skin cancer (cases)
  • Patients without non-melanoma skin cancer or history of non-melanoma skin cancer (controls)
  • Age 50 and older
  • Native English speakers
  • Patients at Kirklin Clinic

Exclusion criteria

  • Age less than 50
  • Diagnosis of melanoma or other type of cancer
  • Non-English speakers

Treatment and study plan

Primary outcomes

  1. SIngle nucleotide polymorphisms (SNP)

    Time frame: 2 years

    Number of patients with the presence or absence of VDR SNP in their DNA isolated from their blood samples. PCR will be performed on the DNA samples for using specific primers for SNP, and the PCR products will be sequenced for detection of SNP.

Sponsors and collaborators

Lead sponsor

University of Alabama at Birmingham

Other

Registry information

Official study title

Vitamin D Receptor Polymorphisms and Non-Melanoma Skin Cancer Risks in Alabama Population

Important dates

Study start
2012
Primary completion
2013
Study completion
2017
First posted
Feb 2, 2017
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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