Evidence map›Paper›PMID 28934974›Full record

ArticleMolecular neurodegeneration2017

Blood hemoglobin A1c levels and amyotrophic lateral sclerosis survival.

Qian-Qian Wei, Yongping Chen, Bei Cao, Ru Wei Ou, Lingyu Zhang, Yanbing Hou, Xiang Gao, Huifang Shang

Abstract read
In one paragraph

Article in Molecular neurodegeneration, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 3 pooled it
–field-weighted citation impact
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

23 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  15. Amyotrophic Lateral Sclerosis: A Diet Review.Foods (Basel, Switzerland) · 2021
    Review
  16. Review
  17. Metabolic Dysfunction in Spinal Muscular Atrophy.International journal of molecular sciences · 2021
    Review
  18. Article
  19. Article
  20. The links between diabetes mellitus and amyotrophic lateral sclerosis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2021
    Review
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

8 authors.

Qian-Qian WeiDepartment of Neurology, West China Hospital, Sichuan University, 37 Guoxue Xiang, Chengdu, Sichuan, 610041, China.
Yongping ChenDepartment of Neurology, West China Hospital, Sichuan University, 37 Guoxue Xiang, Chengdu, Sichuan, 610041, China.
Bei CaoDepartment of Neurology, West China Hospital, Sichuan University, 37 Guoxue Xiang, Chengdu, Sichuan, 610041, China.
Ru Wei OuDepartment of Neurology, West China Hospital, Sichuan University, 37 Guoxue Xiang, Chengdu, Sichuan, 610041, China.
Lingyu ZhangDepartment of Neurology, West China Hospital, Sichuan University, 37 Guoxue Xiang, Chengdu, Sichuan, 610041, China.
Yanbing HouDepartment of Neurology, West China Hospital, Sichuan University, 37 Guoxue Xiang, Chengdu, Sichuan, 610041, China.
Xiang GaoDepartment of Nutritional Science, The Pennsylvania State University, 109 Chandlee Lab, University Park, PA, 16802, USA. xxg14@psu.edu.
Huifang ShangDepartment of Neurology, West China Hospital, Sichuan University, 37 Guoxue Xiang, Chengdu, Sichuan, 610041, China. hfshang2002@163.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere are inconsistences regarding the correlation between diabetes or fasting blood glucose concentrations and the risk and survival of amyotrophic lateral sclerosis (ALS) in the previous studies. Moreover, the association between hemoglobin A1c (HbA1c) levels, which reflect long-term glycemic status, and ALS survival was not examined.

methodsA prospective cohort study including 450 Chinese sporadic ALS patients (254 men and 196 women; mean age: 55.4 y). We identified 223 deaths during average 1.6 years of follow-up. We assessed levels of fasting HbA1c (primary exposure) and glucose (secondary exposure) via ion exchange high-performance liquid chromatography and hexokinase/glucose-6-pgosphate dehydrogenase methods, respectively. Multivariate Cox proportional hazards regression model was used to calculate hazard ratios (HRs) and 95% confidence intervals (CIs) of ALS mortality across the exposures.

resultsOur results indicated that, higher levels of HbA1c, but not fasting blood glucose concentrations, were significantly associated with higher risks of mortality. The adjusted HR was 1.40 (95% confidence interval (95% CI): 1.02-1.99) for HbA1c of 5.7-6.4%, and 2.06 (95% CI: 1.07-3.96) for HbA1c ≥6.5%, relative to HbA1c <5.7% (P trend =0.01), after adjustment for age, smoking, obesity, disease severity, site of onset, lifestyle, and other potential confounders. The adjusted HR was 1.38 (95% CI: 0.81-2.35, P trend =0.13) for fasting glucose concentrations ≥7.0 mmol/L vs <5.6 mmol/L. We did not observe any significant interactions between HbA1c levels and age, sex, smoking, body mass index, rate of disease progression of ALS, and site of onset (P-interactions >0.05 for all).

conclusionIn this prospective study, we observed that individuals with higher HbA1c levels at the baseline had higher risk of mortality, which is independent of other known risk factors.

Indexed as

AdultAgedAmyotrophic Lateral SclerosisAsian PeopleBlood GlucoseCohort StudiesFemaleGlycated HemoglobinHumansMaleMiddle AgedProportional Hazards ModelsProspective StudiesRisk FactorsBlood GlucoseGlycated Hemoglobinhemoglobin A1c protein, humanAmyotrophic lateral sclerosisBody mass indexFasting glucoseHbA1cSurvival

Identifiers

PMID28934974
PMCPMC5609007

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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.