Evidence map›Paper›PMID 26820673›Full record

ArticleMolecular neurobiology2017

Elevated Serum Brain-Derived Neurotrophic Factor (BDNF) but not BDNF Gene Val66Met Polymorphism Is Associated with Autism Spectrum Disorders.

Wei-Dong Meng, Shao-Jun Sun, Jie Yang, Rui-Xue Chu, Wenjun Tu, Qiang Liu

Abstract read
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In one paragraph

Article in Molecular neurobiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 5 pooled it
3.5field-weighted citation impact, top 8% 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

35 citing papers in PubMed, 5 syntheses or guidelines pooled it, 62 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Meta-Analysis of BDNF Levels in Autism.Cellular and molecular neurobiology · 2017
    Pooled it
  4. Pooled it
  5. Pooled it
  6. Review
  7. Review
  8. Article
  9. The Role of GDNF and NSE in Attention-deficit/Hyperactivity Disorder: The Relationship with Sleep and Eating.Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology · 2026
    Article
  10. Review
  11. Article
  12. The Ambiguous Role of Growth Factors in Autism: What Do We Really Know?International journal of molecular sciences · 2025
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. The association betweenFrontiers in behavioral neuroscience · 2022
    Article
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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

6 authors at 2 institutions in 1 country.

Wei-Dong MengDepartment of Laboratory Medicine, Liaocheng People's Hospital, No. 67, Dongchang West Road, Liaocheng, 252000, China.
Shao-Jun SunDepartment of Laboratory Medicine, Liaocheng People's Hospital, No. 67, Dongchang West Road, Liaocheng, 252000, China. wangyws72@163.com.
Jie YangDepartment of Pharmacy, Liaocheng Herbalist Hospital, Liaocheng, China.
Rui-Xue ChuDepartment of Laboratory Medicine, Liaocheng People's Hospital, No. 67, Dongchang West Road, Liaocheng, 252000, China.
Wenjun TuInstitute of Radiation Medicine, Academy of Medical Science and Peking Union Medical College, No. 238, Baiti Road, Tianjin, 300192, China.
Qiang LiuInstitute of Radiation Medicine, Academy of Medical Science and Peking Union Medical College, No. 238, Baiti Road, Tianjin, 300192, China. liuqiang@irm-cams.ac.cn.
Liaocheng People's Hospital · CNChinese Academy of Medical Sciences & Peking Union Medical College · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of our study was to illuminate the potential role of brain-derived neurotrophic factor (BDNF) in autism spectrum disorder (ASD). We measured the circulating levels of BDNF in serum and BDNF gene (Val66Met) polymorphisms, in which two indicators were then compared between ASD and normal controls. A total of 82 drug-naïve ASD children and 82 age- and gender-matched normal controls were enrolled in the study. Their serum BDNF levels were detected by the ELISA. BDNF Val66Met polymorphism genotyping was conducted as according to the laboratory's standard protocol in laboratory. The ASD severity assessment was mainly determined by the score of the Childhood Autism Rating Scale (CARS). ELISA assay showed that the mean serum BDNF level of children with ASD was significantly (P < 0.0001) higher than that of the control cases (17.75 ± 5.43 vs. 11.49 ± 2.85 ng/ml; t = 9.236). Besides, the serum BDNF levels and CARS scores (P < 0.0001) were positively related. And, the BDNF genotyping results showed that there was no difference between the ASD cases and the control. Among the children with ASD, the mean serum BDNF level of Met/Met group was lower than other groups. According to the ROC curve generated from our clinical data, the optimal cutoff value of serum BDNF levels, an indicator for diagnosis of ASD, was projected to be 12.50 ng/ml. Thus, it yielded a corresponding sensitivity of 81.7 % and the specificity of 66.9 %. Accordingly, area value under the curve was 0.836 (95 % CI, 0.774-0.897); the positive predictive value (PPV) and the negative predictive value (NPV) were 70.1 and 79.1 %, respectively. These results suggested that rather than Val66Met polymorphism, BDNF was more possible to impact the pathogenesis of ASD.

Indexed as

Autism Spectrum DisorderBiomarkersBrain-Derived Neurotrophic FactorCase-Control StudiesChildChild, PreschoolFemaleGenetic Association StudiesHumansMaleMethioninePolymorphism, GeneticValineBDNF protein, humanBiomarkersBrain-Derived Neurotrophic FactorMethionineValineAutism spectrum disordersBDNF Val66Met polymorphismBiomarkerBrain-derived neurotrophic factorChinese

Identifiers

PMID26820673
OpenAlexW2273536340

What OpenQuestion holds

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Registered trials

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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.