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NCT Number: NCT02603757

Effectiveness of High Dose Vitamin D Supplementation in Stage III Colorectal Cancer

This is a pilot study to test whether there is an association between baseline Vitamin D levels, Vitamin D supplementation and survival in patients with stage III colon and stage II/III rectal cancer receiving chemotherapy. 70 patients with colon stage III or rectal stage II or III cancer that require chemotherapy will be screened and 60 patients will be enrolled. Patients will be randomized to standard dose (2000 IU daily) or high-dose (50,000 IU weekly) Vitamin D supplementation for 1 year after initiation of chemotherapy. Patients' Vitamin D levels will be checked throughout supplementation then followed for 5 years with occasional Vitamin D testing and surveying in order to collect information on recurrence and survival outcomes.

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Key information

Conditions

Colon Cancer Colonic Diseases Colonic Neoplasms Colorectal Neoplasms Digestive System Diseases Digestive System Neoplasms Gastrointestinal Diseases Gastrointestinal Neoplasms Intestinal Diseases Intestinal Neoplasms Neoplasms Neoplasms by Site Rectal Cancer Rectal Diseases Rectal Neoplasms

Age range

18 year–99 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Legacy Mount Hood Medical Center, Gresham, Oregon, United States

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Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • ≥ 18 years of age
  • Willing to stop herbal medications as directed by physician
  • Willing to stop current supplemental Vitamin D (Multivitamin with Vitamin D component is acceptable)
  • Willing to travel to Legacy Health/OHSU facility if necessary
  • Agree to attend study visits outside of standard of care visits, if necessary
  • Diagnosed with stage III colon or stage II/III rectal cancer that will receive neoadjuvant or adjuvant chemotherapy but have not yet started
  • Baseline serum Vitamin D level below 52 ng/ml

Exclusion criteria

  • ≤ 18 years of age
  • Colon cancer stages I-II and IV or Rectal cancer stage I or IV
  • Patients who do not undergo chemotherapy
  • Patients with prior chemotherapy for this cancer
  • No other prior malignancy except for adequately treated basal cell or squamous cell skin cancer, in situ cancer, or other cancer for which the patient has been disease-free for > 3 years
  • Unable to comply with protocol
  • Unable to provide written informed consent
  • Unwilling or unable to stop oral supplemental Vitamin D
  • Patients taking high-dose Vitamin D supplementation (50,000 IU weekly) prior to enrollment
  • Patients with Vitamin D levels above 52 ng/ml at baseline testing
  • Patients with hypercalcemia and/or any condition resulting in malabsorption
  • Investigator does not believe study participation, for any reason, is in the best interest of the patient

Treatment and study plan

Cholecalciferol

Dietary Supplement

2,000 IU of Vitamin D3 daily and 50,000 IU Vitamin D3 daily

Other names: Vitamin D3

Primary outcomes

  1. Increase in serum Vitamin D3 level during chemotherapy in the active supplementation group compared to the control group.

    Time frame: 1 year

Secondary outcomes

  1. Relapse-free survival (RFS)

    Time frame: 5 years

  2. Overall survival (OS)

    Time frame: 5 years

Sponsors and collaborators

Lead sponsor

Legacy Health System

Other

Registry information

Official study title

Prospective Pilot Study to Assess the Effectiveness of Vitamin D Supplementation for Patients Requiring Chemotherapy for Stage III Colorectal Cancer

Important dates

Study start
2016
Primary completion
2020
Study completion
2020
First posted
Nov 13, 2015
Registry last updated
Oct 1, 2020

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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