PMID- 37606529 OWN - NLM STAT- Publisher LR - 20231016 IS - 1097-4598 (Electronic) IS - 0148-639X (Linking) VI - 68 IP - 5 DP - 2023 Nov TI - Hyperhomocysteinemia in patients with riboflavin-responsive multiple acyl-CoA dehydrogenase deficiency. PG - 750-757 LID - 10.1002/mus.27960 [doi] AB - INTRODUCTION/AIMS: Riboflavin-responsive multiple acyl-CoA dehydrogenase deficiency (RR-MADD) is an autosomal recessive disease chiefly caused by variants of ETFDH affecting fatty acid metabolism. In our cohort, hyperhomocysteinemia (HHcy) was common. In this study we aimed to identify the association between RR-MADD and HHcy. METHODS: We performed a retrospective review of 13 patients with RR-MADD. Thirty-three healthy controls were recruited, and logistic regression was used to investigate the association between RR-MADD and HHcy. Muscle tissues from six patients and six controls without myopathies were collected to measure the levels of flavin adenine dinucleotide (FAD), an active form of riboflavin. Whole-exome sequencing was performed to identify the disease-associated variants. RESULTS: The RR-MADD patients had a higher prevalence of HHcy (9 of 12) than controls (6 of 33, P < .001). In the multivariate analysis, RR-MADD was positively related to HHcy (P = .014). Muscular FAD levels were decreased in RR-MADD patients (P = .006). Thirteen variants (8 reported and 5 novel) were identified in ETFDH. Of these, c.250G > A was the most common pathogenic variant with an allelic frequency of 4 of 20. DISCUSSION: HHcy was associated with RR-MADD and may aid in the diagnosis of the disease. Our findings expand the mutational spectrum of RR-MADD. CI - (c) 2023 Wiley Periodicals LLC. FAU - Zhang, Huiqiu AU - Zhang H AD - Department of Neurology, First Hospital, Shanxi Medical University, Taiyuan, China. AD - First Clinical Medical College, Shanxi Medical University, Taiyuan, China. FAU - Zhao, Rongjuan AU - Zhao R AD - Department of Neurology, First Hospital, Shanxi Medical University, Taiyuan, China. FAU - Ma, Jing AU - Ma J AD - Department of Neurology, First Hospital, Shanxi Medical University, Taiyuan, China. AD - First Clinical Medical College, Shanxi Medical University, Taiyuan, China. FAU - Zhang, Jingfei AU - Zhang J AD - Department of Neurology, First Hospital, Shanxi Medical University, Taiyuan, China. AD - First Clinical Medical College, Shanxi Medical University, Taiyuan, China. FAU - Wang, Juan AU - Wang J AD - Department of Neurology, First Hospital, Shanxi Medical University, Taiyuan, China. FAU - Chang, Xueli AU - Chang X AD - Department of Neurology, First Hospital, Shanxi Medical University, Taiyuan, China. FAU - Guo, Junhong AU - Guo J AD - Department of Neurology, First Hospital, Shanxi Medical University, Taiyuan, China. FAU - Zhang, Wei AU - Zhang W AUID- ORCID: 0000-0003-4434-5599 AD - Department of Neurology, First Hospital, Shanxi Medical University, Taiyuan, China. LA - eng GR - 20210302123245/Shanxi Science and Technology Department/ PT - Journal Article DEP - 20230822 PL - United States TA - Muscle Nerve JT - Muscle & nerve JID - 7803146 SB - IM OTO - NOTNLM OT - electron-transfer flavoprotein dehydrogenase OT - inheritance mode OT - riboflavin-responsive multiple acyl-CoA dehydrogenase deficiency OT - variant EDAT- 2023/08/22 13:42 MHDA- 2023/08/22 13:42 CRDT- 2023/08/22 09:34 PHST- 2023/08/06 00:00 [revised] PHST- 2023/03/23 00:00 [received] PHST- 2023/08/07 00:00 [accepted] PHST- 2023/08/22 13:42 [pubmed] PHST- 2023/08/22 13:42 [medline] PHST- 2023/08/22 09:34 [entrez] AID - 10.1002/mus.27960 [doi] PST - ppublish SO - Muscle Nerve. 2023 Nov;68(5):750-757. doi: 10.1002/mus.27960. Epub 2023 Aug 22.