scholarly journals A family with riboflavin-reactive lipid deposition myopathy caused by a novel compound heterozygous mutation in the electron transfer flavoprotein dehydrogenase gene

2020 ◽  
Vol 48 (11) ◽  
pp. 030006052096649
Author(s):  
Yue Wu ◽  
Jingzhe Han ◽  
Yaye Wang ◽  
Jinru Zhang ◽  
Xueqin Song ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Muscle Biopsy ◽  
Physical Symptoms ◽  
Muscle Disease ◽  
Compound Heterozygous Mutation ◽  
Heterozygous Mutation ◽  
Compound Heterozygous ◽  
Lipid Deposition ◽  
Electron Transfer Flavoprotein ◽  
Dehydrogenase Gene

We report a family with riboflavin-reactive multiple acyl-CoA dehydrogenase deficiency (RR-MADD) partially caused by a novel mutation in the electron transfer flavoprotein dehydrogenase gene (ETFDH). The RR-MADD family was identified by physical examination, electromyography, and muscle biopsy of the proband. Laboratory examination and electromyography suggested a muscle disease of the lipid storage myopathies. This was confirmed by a muscle biopsy that revealed lipid deposition in the muscle fibers. The proband’s sister previously had a similar disease, so the family underwent genetic testing. This revealed complex heterozygous ETFDH mutations c.389A > T (p. D130V) and c.1123C > A (p. P375T) in the proband and her sister, of which c.1123C > A (p. P375T) is a novel pathogenic mutation. The proband was treated with riboflavin and changes in physical symptoms and laboratory tests were evaluated before and after treatment. The discovery of a novel locus further expands the ETFDH mutation spectrum and suggests that genotyping is vital for early detection of RR-MADD as it can greatly improve the prognosis.

scholarly journals A Novel Compound Heterozygous Mutation in ABCB4 Gene Leading to Cholelithiasis, Progressive Familial Intrahepatic Cholestasis (Type 3), and Cirrhosis in a Child

2020 ◽  
Vol 10 (01) ◽  
pp. e134-e136
Author(s):  
Nida Mirza ◽  
Smita Malhotra ◽  
Anupam Sibal
Keyword(s):  
Intrahepatic Cholestasis ◽  
Gall Stone ◽  
Compound Heterozygous Mutation ◽  
Heterozygous Mutation ◽  
Compound Heterozygous ◽  
Initial Symptom ◽  
Progressive Familial Intrahepatic Cholestasis ◽  
Presenting Symptoms ◽  
Abcb4 Gene ◽  
Type 3

AbstractProgressive familial intrahepatic cholestasis (PFIC) is a heterogeneous group of autosomal recessive disorders of childhood which presents with intermittent or progressive episodes of cholestasis, with jaundice and pruritus as most common presenting symptoms. PFIC type 3 occurs due to mutations in the ABCB4 gene, mutation in this gene has wide spectrum of features which include intrahepatic stones, cholelithiasis, PFIC type 3, and intrahepatic cholestasis of pregnancy. Here, we are reporting a peculiar case of young male adolescent with novel variant compound heterozygote missense mutation in ABCB4 gene who had gall stone as initial symptom, followed by symptoms of PFIC and eventually decompensated chronic liver disease.

scholarly journals Leptin Receptor Compound Heterozygosity in Humans and Animal Models

2021 ◽  
Vol 22 (9) ◽  
pp. 4475
Author(s):  
Claudia Berger ◽  
Nora Klöting
Keyword(s):  
Food Intake ◽  
Animal Models ◽  
Leptin Receptor ◽  
Compound Heterozygous Mutation ◽  
Heterozygous Mutation ◽  
Compound Heterozygous ◽  
Compound Heterozygosity ◽  
Therapy Options ◽  
Obese Phenotype ◽  
Deficient Mice

Leptin and its receptor are essential for regulating food intake, energy expenditure, glucose homeostasis and fertility. Mutations within leptin or the leptin receptor cause early-onset obesity and hyperphagia, as described in human and animal models. The effect of both heterozygous and homozygous variants is much more investigated than compound heterozygous ones. Recently, we discovered a spontaneous compound heterozygous mutation within the leptin receptor, resulting in a considerably more obese phenotype than described for the homozygous leptin receptor deficient mice. Accordingly, we focus on compound heterozygous mutations of the leptin receptor and their effects on health, as well as possible therapy options in human and animal models in this review.

scholarly journals Novel compound heterozygous mutation in SACS gene leads to a milder autosomal recessive spastic ataxia of Charlevoix‐Saguenay, ARSACS , in a Finnish family

2016 ◽  
Vol 4 (12) ◽  
pp. 1151-1156 ◽  
Author(s):  
Johanna Palmio ◽  
Mikko Kärppä ◽  
Peter Baumann ◽  
Sini Penttilä ◽  
Jukka Moilanen ◽  
...  
Keyword(s):  
Autosomal Recessive ◽  
Compound Heterozygous Mutation ◽  
Heterozygous Mutation ◽  
Compound Heterozygous ◽  
Spastic Ataxia

scholarly journals Paediatric Hypophosphatasia in Real-Life Clinical Practise.

Doctor Ru ◽  
2020 ◽  
Vol 19 (10) ◽  
pp. 57-60
Author(s):  
A.V. Vitebskaya ◽  
◽  
Chernova E.V. Chernova ◽  
Keyword(s):  
Alkaline Phosphatase ◽  
Clinical Case ◽  
Clinical Signs ◽  
Real Life ◽  
Compound Heterozygous Mutation ◽  
Heterozygous Mutation ◽  
Compound Heterozygous ◽  
Milk Teeth ◽  
Motor Retardation ◽  
Gait Disturbances

Objective of the Paper: to describe a clinical case of paediatric hypophosphatasia (HPP) and identify clinical signs, most characteristic of the paediatric HPP form. Key Points. HPP is an congenital rickets-like disease caused by reduced activity of tissue-nonspecific alkaline phosphatase (ALP). According to the time of manifestation, there are perinatal, infant, paediatric, and adult HPPs. The article describes a clinical case of paediatric HPP in a 3.5-year old boy. HPP was diagnosed due to reduced ALP and characteristic X-ray findings. The diagnosis was confirmed with DNA testing: compound heterozygous mutation in с.571 G>A/с.144_148dup of ALPL was found. Conclusion. Typical findings in paediatric HPP are growth retardation and muscular hypotonia, motor retardation; gait disturbances, myalgia, marked fatigue causing limited period of walking; rachitic deformations, premature loss of milk teeth with unchanged roots, respiratory disturbances, and frequent bronchopulmonary disorders. Keywords: hypophosphatasia, children, alkaline phosphatase.

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