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Clinical characteristics of BRAT1-related disease: a systematic literature review

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Abstract

Background

BRAT1 (BRCA1-associated ataxia telangiectasia mutated activator 1) is involved in many important biological processes, including DNA damage response and maintenance of mitochondrial homeostasis. Dysfunctional BRAT1 causes variable clinical phenotypes, which hinders BRAT1-related disease from recognition and diagnosis.

Methods

Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement was the guideline for this systematic review. MEDLINE was searched by terms (“BAAT1” and “BRAT1”) from inception until June 21, 2022.

Results

Twenty-eight studies, screened out of 49 records, were included for data extraction. The data from fifty patients with mutated BRAT1 were collected. There are 3 high relevant phenotypes, 4 medium relevant phenotypes and 3 low relevant phenotypes. Eye-related abnormal features were most frequently reported: 27 abnormal features were observed. Thirty-nine kinds of pathogenic nucleotide change in BRAT1 were reported. Top three common mutations of BRAT1 were c.638_639insA (16 cases), c.1395G > A (5 cases) and c.294dupA (4 cases). Homozygous mutations in BRAT1 presented a more severe phenotype than those who are compound heterozygotes.

Conclusions

This is the first comprehensive systematic review to present quantitative data about clinical characteristics of BRAT1-related disease, which helps doctors to recognize and diagnose it easier.

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Availability of data and materials

Data from patients can be made available from the corresponding author after discussion with the Institutional Review Board.

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Funding

This work was supported by a grant from the National Natural Science Foundation of China (82202059).

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Authors and Affiliations

  1. Department of Pediatrics, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China

    Weijing Kong

  2. Rehabilitation Department, Ju County Maternal and Child Health Hospital, Shandong, 276500, China

    Xianying Cao

  3. Beijing Hong Jian Medical Device Company, Beijing, 100176, China

    Cheng Lu

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Contributions

WJ K wrote the manuscript, supervised data and manuscript. XY C and C L collected and analyzed related articles and data. All authors read and approved the final manuscript.

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Correspondence to Weijing Kong.

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Kong, W., Cao, X. & Lu, C. Clinical characteristics of BRAT1-related disease: a systematic literature review. Acta Neurol Belg (2024). https://doi.org/10.1007/s13760-024-02507-y

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