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A case of 5,10-methenyltetrahydrofolate synthetase deficiency due to biallelic null mutations with novel findings of elevated neopterin and macrocytic anemia
Journal article   Open access   Peer reviewed

A case of 5,10-methenyltetrahydrofolate synthetase deficiency due to biallelic null mutations with novel findings of elevated neopterin and macrocytic anemia

Jacqueline A. Romero, Imane Abdelmoumen, Daphne Hasbani, Divya S. Khurana and Michael C. Schneider
Molecular genetics and metabolism reports, v 21, pp 100545-100545
21 Nov 2019
PMID: 31844630
url
https://doi.org/10.1016/j.ymgmr.2019.100545View
Published, Version of Record (VoR)CC BY V4.0 Open

Abstract

5,10-methenyltetrahydrofolate synthetase 5-formyl THF, 5-formyl tetrahydrofolate 5-MTHF, 5-methyl tetrahydrofolate AICARFT, phosphoribosylaminoimidazolecarboxamide formyltransferase BH4, tetrahydrobiopterin Cerebral hypomyelination Folate MTHFS MTHFS, 5,10-methenyltetrahydrofolate synthetase SAM, S-adenosylmethionine SHMT, serine hydroxymethyltransferase Short Communication
We describe a case of 5,10-methenyltetrahydrofolate synthetase (MTHFS) deficiency characterized by microcephaly, global developmental delay, epilepsy, and cerebral hypomyelination. Whole exome sequencing (WES) demonstrated homozygosity for the R74X mutation in the MTHFS gene. The patient had the unexpected finding of elevated cerebrospinal fluid (CSF) neopterin. The novel finding of macrocytic anemia in this patient may provide a clue to the diagnosis of this rare neurometabolic disorder.

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Web of Science research areas
Genetics & Heredity
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