Novel ABCD1 gene mutations in Iranian pedigrees with X-linked adrenoleukodystrophy
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Babak Emamalizadeh
Abstract
Background
X-linked adrenoleukodystrophy (X-ALD), the most common peroxisomal disorder, is caused by mutations in the ABCD1 gene located on Xq28. X-ALD is characterized by a spectrum of different manifestations varying in patients and families.
Methods
Four pedigrees with X-ALD consisting of patients and healthy members were selected for investigation of ABCD1 gene mutations. The mutation analysis was performed by polymerase chain reaction (PCR) followed by direct sequencing of all exons. The identified mutations were investigated using bioinformatics tools to predict their effects on the protein product and also to compare the mutated sequence with close species.
Results
One previously known missense mutation (c.1978 C > T) and three novel mutations (c.1797dupT, c.879delC, c.1218 C > G) were identified in the ABCD1 gene, each in one family. Predicting the effects of the mutations on protein structure and function indicated the probable damaging effect for them with significant alterations in the protein structure. We found three novel mutations in the ABCD1 gene with damaging effects on its protein product and responsible for X-ALD.
Funding source: Tabriz University of Medical Sciences
Award Identifier / Grant number: 61680
Funding statement: This work was supported by Research Vice-Chancellor, Tabriz University of Medical Sciences, Funder Id: http://dx.doi.org/10.13039/501100004366, grant code 61680.
Acknowledgments
We thank all patients and their families for participating in this research. We also thank all staff and laboratory members in Tabriz University of Medical Sciences who participated in this work.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Employment or leadership: None declared.
Honorarium: None declared.
Competing interests: The funding organization(s) played no role in the study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the report for publication.
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©2019 Walter de Gruyter GmbH, Berlin/Boston
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Articles in the same Issue
- Frontmatter
- Editorial
- Hypo- and hyperthyroidism in early life – new developments
- Letters to the Editor
- Optic nerve sheath diameter appraisal in children affected by diabetic ketoacidosis
- Optic nerve sheath diameter ultrasound measurement to evaluate cerebral edema in children with diabetic ketoacidosis
- Original Articles
- Novel ABCD1 gene mutations in Iranian pedigrees with X-linked adrenoleukodystrophy
- Phenylketonuric patients represent their disease
- Mapping of IDUA gene variants in Pakistani patients with mucopolysaccharidosis type 1
- Genetic testing of two Pakistani patients affected with rare autosomal recessive Fanconi-Bickel syndrome and identification of a novel SLC2A2 splice site variant
- Sex differences in infant body composition emerge in the first 5 months of life
- Characterization of the duration of treatment with diazoxide in infants with prolonged hyperinsulinism (PHI)
- Clinical, biochemical and gender characteristics of 97 prepubertal children with premature adrenarche
- The adjustment of 17-hydroxyprogesterone cut-off values for congenital adrenal hyperplasia neonatal screening by GSP according to gestational age and age at sampling
- The role of vitamin D replacement therapy in serum FGF23 concentration in children with myelomeningocele compared with healthy children – a preliminary study
- Genetic analyses in a cohort of Portuguese pediatric patients with congenital hypothyroidism
- Congenital hypothyroidism in preterm infants: a 3- to 8-year longitudinal study in southern Thailand
- Case Reports
- A case of PHACE syndrome with growth hormone deficiency and abnormal thyroid functions
- A novel DCAF17 homozygous mutation in a girl with Woodhouse-Sakati syndrome and review of the current literature
- Acquired von Willebrand’s syndrome caused by primary hypothyroidism in a 5-year-old girl
- Double variants in TSHR and DUOX2 in a patient with hypothyroidism: case report
