Evidence map›Paper›PMID 19661077›Full record

ArticleCancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology2009

Plasma levels of B vitamins and colorectal cancer risk: the multiethnic cohort study.

Loïc Le Marchand, Kami K White, Abraham M Y Nomura, Lynne R Wilkens, Jacob S Selhub, Maarit Tiirikainen, Marc T Goodman, Suzanne P Murphy, Brian E Henderson, Laurence N Kolonel

Open access · bronzeAbstract read
In one paragraph

Article in Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 2 pooled it
4.0field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

46 citing papers in PubMed, 2 syntheses or guidelines pooled it, 86 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Baseline plasma total homocysteine and adenoma recurrence: results from a double blind randomized clinical trial of aspirin and folate supplementation.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2010
    Trial
  4. Review
  5. From Fly to Human: Translational Relevance ofInternational journal of molecular sciences · 2026
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Scientific opinion on the tolerable upper intake level for folate.EFSA journal. European Food Safety Authority · 2023
    Article
  11. Vitamin BScience advances · 2023
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. The Revised D-A-CH-Reference Values for the Intake of Vitamin BMolecular nutrition & food research · 2019
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 4 institutions in 1 country.

Loïc Le MarchandCancer Research Center of Hawaii, University of Hawaii, Honolulu, HI 96813, USA. Loic@crch.hawaii.edu.
Kami K White
Abraham M Y Nomura
Lynne R Wilkens
Jacob S Selhub
Maarit Tiirikainen
Marc T Goodman
Suzanne P Murphy
Brian E Henderson
Laurence N Kolonel
University of Southern California · USJean Mayer Human Nutrition Research Center on Aging · USTufts University · USUniversity of Hawaii System · US

Funding

Multiethnic Cohort Study of Diet and CancerR37CA054281 · NCI · UNIVERSITY OF HAWAII AT MANOA · PI KOLONEL, LAURENCE N. · 2003 to 2012
$23.2M
VALIDATION OF A DIET HISTORY METHOD FOR EPIDEMIOLOGIC STUDIES OF CANCERP01CA033619 · NCI · UNIVERSITY OF HAWAII AT MANOA · PI KOLONEL, LAURENCE N. · 1985 to 2010
$18.5M
NCI NIH HHS N01 PC035137NCI NIH HHS N01 PC035139NCI NIH HHS N01-PC-35137NCI NIH HHS N01-PC-35139NCI NIH HHS P01 CA033619NCI NIH HHS P01 CA33619NCI NIH HHS R37 CA054281NCI NIH HHS R37 CA54281
6 · The paper itself

Abstract

B vitamins, such as folate, vitamin B6, and vitamin B12, play an important role as coenzymes in one-carbon metabolism and may affect colorectal cancer risk. We aimed to comprehensively investigate the relationships of plasma folate, pyridoxal-5'-phosphate (PLP, the active form of vitamin B6), vitamin B12, methylmalonic acid, homocysteine, and cysteine with colorectal cancer risk, accounting for suspected modifiers (alcohol intake, MTHFR C677T genotype, and plasma C-reactive protein) and potential confounders. We conducted a case-control study nested within the Multiethnic Cohort study and analyzed prospectively collected blood samples from 224 incident colorectal cancer cases and 411 controls matched on age, sex, race/ethnicity, study site, date/time of blood draw, and hours of fasting. We found an inverse association between plasma PLP levels and colorectal cancer, with odds ratios (95% confidence intervals) for increasing quartiles of 1.00, 0.84 (0.51-1.40), 0.62 (0.37-1.03), and 0.49 (0.29-0.83), with P trend = 0.009. This association was not explained by an association with plasma folate, seemed to be stronger at low levels of alcohol intake and among individuals with the MTHFR 677TT genotype, and was independent of plasma C-reactive protein levels. An inverse association with plasma folate was also observed among individuals with a low level of alcohol intake. These data suggest an independent role for vitamin B6 in reducing colorectal cancer risk.

Indexed as

AgedAlcohol DrinkingCase-Control StudiesColorectal NeoplasmsC-Reactive ProteinFemaleFolic AcidGenetic Predisposition to DiseaseGenotypeHumansMaleMethylenetetrahydrofolate Reductase (NADPH2)Middle AgedPolymorphism, Single NucleotideReverse Transcriptase Polymerase Chain ReactionRisk FactorsC-Reactive ProteinFolic AcidMethylenetetrahydrofolate Reductase (NADPH2)Vitamin B 6Vitamin B Complex

Identifiers

PMID19661077
PMCPMC2978659
OpenAlexW2132398335

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.