Low Plasma 25-Hydoxyvitamin D at Diagnosis Predicts Poor Outcomes in Patients with Bladder Cancer: A Prospective Cohort Study

Published on Wednesday, 12 August 2020

Abstract

This study aimed to investigate whether plasma 25-hydroxyvitamin D (25-OHD) at diagnosis predicts poor outcomes in patients with urothelial bladder cancer.

A total of 177 patients with non-muscle-invasive bladder cancer (NMIBC) were prospectively followed up over a period extending beyond 6 years.

Data on poor outcomes (ie., recurrence, progression, and mortality) were collected. Plasma 25-OHD was measured by immunoassay.

Cutoff-Finder web application was used to determine the best 25-OHD cutoff point to predict a specific poor outcome.

Cox-hazard models were applied to test how plasma 25-OHD affect patients outcome while adjusting for potential confounding factors.

During the follow-up period, tumor recurrence and progression occurred in 40.7% and 14.1% of patients, respectively and 11.3% of patients died.

Baseline 25-OHD was lower in patients who experienced poor outcome (12.2 ± 7.44 vs. 16.7 ± 10.6 ng/mL; p<0.001).

Multi-adjusted HR (95% CI) for vitamin D deficiency (25-OHD < 12 ng/mL) was 2.09 (1.27-3.44) for recurrence, 2.63 (1.06-6.49) for progression and 2.93 (1.04-8.25) for mortality in patients with NMIBC.

Low plasma 25-OHD in NMIBC patients is associated with higher risk of poor outcome.

Future work is required to test whether correction of vitamin D deficiency will improve quality of life and extend survival in these patients.

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About this publication.

- The Di Bella Method (A Fixed Part - Dihydrotachysterol, Alfacalcidol, synthetic Vitamin D3);

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- The Di Bella Method (A Fixed Part - Cyclophosphamide 50mg tablets and/or Hydroxyurea 500mg tablets, one or two per day);

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- The Di Bella Method (DBM) in the treatment of prostate cancer: a preliminary retrospective study of 16 patients and a review of the literature;

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- Evaluation of the safety and efficacy of the first-line treatment with somatostatin combined with melatonin, retinoids, vitamin D3, and low doses of cyclophosphamide in 20 cases of breast cancer: a preliminary report;