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Case Report Open Access

A novel exomal ATRX mutation with preferential transmission to offspring: A case report and review of the literature for transmission ratio distortion in ATRX families

  • Authors:
    • Mariano Stabile
    • Davide Colavito
    • Elda Del Giudice
    • Anna F. Rispoli
    • Marina C. Ingenito
    • Anna K. Naumova
  • View Affiliations / Copyright

    Affiliations: Zygote Center, Center for Genetics, Prenatal Diagnosis, Fertility, I-84131 Salerno, Italy, Research & Innovation s.r.l. (R&I Genetics), I-35127 Padova, Italy, Departments of Obstetrics and Gynecology and Human Genetics, Research Institute of the McGill University Health Centre (RI-MUHC), McGill University, Montreal, Quebec H4A 3J1, Canada
    Copyright: © Stabile et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY 4.0].
  • Pages: 4561-4566
    |
    Published online on: October 9, 2020
       https://doi.org/10.3892/mmr.2020.11574
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Abstract

The present case report describes an Italian family with three affected probands, who exhibited serious mental disability, which has not been associated with other anomalies, except with slight facial dysmorphism. Molecular multigenic analysis for intellectual disability identified a previously unreported variant, p.Ile1765Met (c.5295C>G) in the SNF domain of the ATRX protein (in exon 24). The identified mutation was found in a hemizygous state in all three affected probands and in a heterozygous state in the asymptomatic mother and the female sibling. With respect to the phenotypic similarities found in the patients with those described in previous studies, the consistency in the mode of inheritance and segregation of the mutation, the variant reported in the present case report may be considered as ‘likely pathogenic’. To investigate the hypothesis that the preferential transmission of the ATRX mutation observed in this family reflected a general trend, a meta‑analysis into the segregation of ATRX mutations from published pedigrees, following allelic transmission from mothers who are heterozygous carriers to their offspring, was performed. A preferential transmission of the mutant allele to male offspring (58% of males inherited the mutant allele) was found; however, the bias was not statistically significant (P=0.29; χ2 test).
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Copy and paste a formatted citation
Spandidos Publications style
Stabile M, Colavito D, Del Giudice E, Rispoli AF, Ingenito MC and Naumova AK: A novel exomal ATRX mutation with preferential transmission to offspring: A case report and review of the literature for transmission ratio distortion in ATRX families. Mol Med Rep 22: 4561-4566, 2020.
APA
Stabile, M., Colavito, D., Del Giudice, E., Rispoli, A.F., Ingenito, M.C., & Naumova, A.K. (2020). A novel exomal ATRX mutation with preferential transmission to offspring: A case report and review of the literature for transmission ratio distortion in ATRX families. Molecular Medicine Reports, 22, 4561-4566. https://doi.org/10.3892/mmr.2020.11574
MLA
Stabile, M., Colavito, D., Del Giudice, E., Rispoli, A. F., Ingenito, M. C., Naumova, A. K."A novel exomal ATRX mutation with preferential transmission to offspring: A case report and review of the literature for transmission ratio distortion in ATRX families". Molecular Medicine Reports 22.6 (2020): 4561-4566.
Chicago
Stabile, M., Colavito, D., Del Giudice, E., Rispoli, A. F., Ingenito, M. C., Naumova, A. K."A novel exomal ATRX mutation with preferential transmission to offspring: A case report and review of the literature for transmission ratio distortion in ATRX families". Molecular Medicine Reports 22, no. 6 (2020): 4561-4566. https://doi.org/10.3892/mmr.2020.11574
Copy and paste a formatted citation
x
Spandidos Publications style
Stabile M, Colavito D, Del Giudice E, Rispoli AF, Ingenito MC and Naumova AK: A novel exomal ATRX mutation with preferential transmission to offspring: A case report and review of the literature for transmission ratio distortion in ATRX families. Mol Med Rep 22: 4561-4566, 2020.
APA
Stabile, M., Colavito, D., Del Giudice, E., Rispoli, A.F., Ingenito, M.C., & Naumova, A.K. (2020). A novel exomal ATRX mutation with preferential transmission to offspring: A case report and review of the literature for transmission ratio distortion in ATRX families. Molecular Medicine Reports, 22, 4561-4566. https://doi.org/10.3892/mmr.2020.11574
MLA
Stabile, M., Colavito, D., Del Giudice, E., Rispoli, A. F., Ingenito, M. C., Naumova, A. K."A novel exomal ATRX mutation with preferential transmission to offspring: A case report and review of the literature for transmission ratio distortion in ATRX families". Molecular Medicine Reports 22.6 (2020): 4561-4566.
Chicago
Stabile, M., Colavito, D., Del Giudice, E., Rispoli, A. F., Ingenito, M. C., Naumova, A. K."A novel exomal ATRX mutation with preferential transmission to offspring: A case report and review of the literature for transmission ratio distortion in ATRX families". Molecular Medicine Reports 22, no. 6 (2020): 4561-4566. https://doi.org/10.3892/mmr.2020.11574
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