Serum 25-Hydroxyvitamin D Levels and Prognosis in Hematological Malignancies: A Systematic Review and Meta-Analysis

Background/Aims: Serum 25-hydroxyvitamin D [25(OH)D] levels proved to be associated with prognosis of patients with colorectal cancer or breast cancer, but its prognostic role in hematological malignancies was still unclear. A systematic review and meta-analysis was performed to comprehensively evaluate the association between serum 25(OH)D levels and prognosis of patients with hematological malignancies. Methods: We searched Pubmed, Embase, Web of Science, and Google Scholar for studies evaluating the association between serum 25(OH)D levels and prognosis of patients with hematological malignancies. The hazard ratios (HR) with 95% confidence intervals (95%CI) for overall survival (OS) or relapse-free survival (RFS) were pooled using meta-analysis. Results: Seven studies with a total of 2,643 patients with hematological cancer were finally included into the meta-analysis. Overall, compared with normal serum 25(OH)D levels, low serum 25(OH)D levels were significantly associated with both poorer OS (HR = 1.85, 95% CI 1.54-2.23, P <0.001) and poorer RFS (HR = 1.45, 95% CI 1.25 to 1.70, P <0.001) in hematological malignancies. Subgroup analysis further showed that low serum 25(OH)D levels were significantly associated with poorer OS and RFS in both lymphoma and leukemia. Conclusion: Low serum 25(OH)D levels are significantly associated with poorer prognosis in patients with hematological malignancies including lymphoma and leukemia.

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Low Serum 25-hydroxyvitamin D (Vitamin D) Level Is Associated With Susceptibility to COVID-19, Severity, and Mortality: A Systematic Review and Meta-Analysis

Frontiers in Nutrition ◽

10.3389/fnut.2021.660420 ◽

2021 ◽

Vol 8 ◽

Author(s):

Mohammad Rizki Akbar ◽

Arief Wibowo ◽

Raymond Pranata ◽

Budi Setiabudiawan

Keyword(s):

Systematic Review ◽

Meta Analysis ◽

Secondary Outcome ◽

Control Group ◽

Hydroxyvitamin D ◽

Literature Searches ◽

25 Hydroxyvitamin D ◽

Meta Regression Analysis ◽

Embase Database ◽

Low Serum

Background: This systematic review and meta-analysis aimed to assess whether low serum 25-hydroxyvitamin D (25-OHD) level is associated with susceptibility to COVID-19, severity, and mortality related to COVID-19.Methods: Systematic literature searches of PubMed, Scopus, and Embase database up until 9 December 2020. We include published observational prospective and retrospective studies with information on 25-OHD that reported main/secondary outcome. Low serum 25-OHD refers to participants with serum 25-OHD level below a cut-off point ranging from 20 to 30 ng/mL. Other cut-off values were excluded to reduce heterogeneity. The main outcome was mortality defined as non-survivor/death. The secondary outcome was susceptibility and severe COVID-19.Results: There were 14 studies comprising of 999,179 participants. Low serum 25-OHD was associated with higher rate of COVID-19 infection compared to the control group (OR = 2.71 [1.72, 4.29], p < 0.001; I2: 92.6%). Higher rate of severe COVID-19 was observed in patients with low serum 25-OHD (OR = 1.90 [1.24, 2.93], p = 0.003; I2: 55.3%), with a sensitivity of 83%, specificity of 39%, PLR of 1.4, NLR of 0.43, and DOR of 3. Low serum 25-OHD was associated with higher mortality (OR = 3.08 [1.35, 7.00], p = 0.011; I2: 80.3%), with a sensitivity of 85%, specificity of 35%, PLR of 1.3, NLR of 0.44, and DOR of 3. Meta-regression analysis showed that the association between low serum 25-OHD and mortality was affected by male gender (OR = 1.22 [1.08, 1.39], p = 0.002), diabetes (OR = 0.88 [0.79, 0.98], p = 0.019).Conclusion: Low serum 25-OHD level was associated with COVID-19 infection, severe presentation, and mortality.

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Corrigendum: Low Serum 25-hydroxyvitamin D (Vitamin D) Level Is Associated With Susceptibility to COVID-19, Severity, and Mortality: A Systematic Review and Meta-Analysis

Frontiers in Nutrition ◽

10.3389/fnut.2021.754539 ◽

2021 ◽

Vol 8 ◽

Author(s):

Mohammad Rizki Akbar ◽

Arief Wibowo ◽

Raymond Pranata ◽

Budi Setiabudiawan

Keyword(s):

Systematic Review ◽

Vitamin D ◽

Meta Analysis ◽

Hydroxyvitamin D ◽

25 Hydroxyvitamin D ◽

Low Serum

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Circulating 25-hydroxyvitamin D level and prognosis of lung cancer patients: A systematic review and meta-analysis

Bulletin du Cancer ◽

10.1016/j.bulcan.2017.05.001 ◽

2017 ◽

Vol 104 (7-8) ◽

pp. 675-682 ◽

Cited By ~ 2

Author(s):

Jian-Da Huang ◽

Chao-Hui Dong ◽

Sheng-Wen Shao ◽

Tong-Jie Gu ◽

Zhi-Lin Hu ◽

...

Keyword(s):

Lung Cancer ◽

Systematic Review ◽

Cancer Patients ◽

Meta Analysis ◽

Lung Cancer Patients ◽

Hydroxyvitamin D ◽

25 Hydroxyvitamin D

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Vitamin D and Type 1 Diabetes Risk: A Systematic Review and Meta-Analysis of Genetic Evidence

Nutrients ◽

10.3390/nu13124260 ◽

2021 ◽

Vol 13 (12) ◽

pp. 4260

Author(s):

Liana Najjar ◽

Joshua Sutherland ◽

Ang Zhou ◽

Elina Hyppönen

Keyword(s):

Systematic Review ◽

Vitamin D ◽

Type 1 Diabetes ◽

Meta Analysis ◽

Low Frequency ◽

Nucleotide Polymorphisms ◽

Hydroxyvitamin D ◽

Quantitative Synthesis ◽

25 Hydroxyvitamin D

Several observational studies have examined vitamin D pathway polymorphisms and their association with type 1 diabetes (T1D) susceptibility, with inconclusive results. We aimed to perform a systematic review and meta-analysis assessing associations between selected variants affecting 25-hydroxyvitamin D [25(OH)D] and T1D risk. We conducted a systematic search of Medline, Embase, Web of Science and OpenGWAS updated in April 2021. The following keywords “vitamin D” and/or “single nucleotide polymorphisms (SNPs)” and “T1D” were selected to identify relevant articles. Seven SNPs (or their proxies) in six genes were analysed: CYP2R1 rs10741657, CYP2R1 (low frequency) rs117913124, DHCR7/NADSYN1 rs12785878, GC rs3755967, CYP24A1 rs17216707, AMDHD1 rs10745742 and SEC23A rs8018720. Seven case-control and three cohort studies were eligible for quantitative synthesis (n = 10). Meta-analysis results suggested no association with T1D (range of pooled ORs for all SNPs: 0.97–1.02; p > 0.01). Heterogeneity was found in DHCR7/NADSYN1 rs12785878 (I2: 64.8%, p = 0.02). Sensitivity analysis showed exclusion of any single study did not alter the overall pooled effect. No association with T1D was observed among a Caucasian subgroup. In conclusion, the evidence from the meta-analysis indicates a null association between selected variants affecting serum 25(OH)D concentrations and T1D.

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