Hereditary spastic paraplegias (HSPs) are well-characterized disorders but rarely reported in Africa. We evaluated a Malian family in which three individuals had HSP and distal muscle atrophy and sensory loss. HSP panel testing identified a novel heterozygous missense mutation in (c.1086G>C, p.Lys362Asn) that segregated with the disease (SPG10). Lys362 is highly conserved across species and Lys362Asn is predicted to be damaging. This study shows that HSPs are present in sub-Saharan Africa, although likely underdiagnosed. Increasing efficiency and decreasing costs of DNA sequencing will make it more feasible to diagnose HSPs in developing countries.
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http://dx.doi.org/10.1002/acn3.402 | DOI Listing |
HGG Adv
January 2025
Division of Human Genetics, Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa; McKusick-Nathans Institute, and Department of Genetic Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD, USA. Electronic address:
Front Genet
November 2024
Faculté de Médecine et d'Odontostomatologie, University of Sciences Techniques and Technologies of Bamako, Bamako, Mali.
Background And Objectives: Developmental and epileptic encephalopathies (DEEs) are a group of neurological disorders characterized by early-onset seizures that are often resistant to treatment, by electroencephalographic abnormalities, and by developmental delay or regression. Their genetic basis remains largely unelucidated, especially in sub-Saharan Africa (SSA). We investigated the genetic bases of DEE in three Malian families.
View Article and Find Full Text PDFMol Genet Genomic Med
November 2024
Faculté de Médecine et d'Odontostomatologie, Université des Sciences, des Techniques et des Technologies de Bamako, Bamako, Mali.
Background: Congenital muscular dystrophies (CMDs) are diverse early-onset conditions affecting skeletal muscle and connective tissue. This group includes collagen VI-related dystrophies such as Ullrich congenital muscular dystrophy (UCMD) and Bethlem myopathy (BM), caused by mutations in the COL6A1, COL6A2 and COL6A3 genes. We report a consanguineous Malian family with three siblings affected by UCMD due to a novel homozygous splice site variant in the COL6A1 gene.
View Article and Find Full Text PDFFront Neurol
September 2024
Faculté de Médecine et d'Odontostomatologie, Université des Sciences, des Techniques et des Technologies de Bamako (USTTB), Bamako, Mali.
Background And Objectives: Progressive myoclonic epilepsy (PME) is a group of neurological disorders characterized by recurrent myoclonic seizures with progressive neurological deterioration. We investigated the genetics of three unrelated patients with PME from Mali, a country in sub-Saharan Africa highly underrepresented in genetic and genomic research.
Methods: Participants were carefully examined and phenotyped.
J Infect
October 2024
Malaria Research Program, Center for Vaccine Development and Global Health, University of Maryland School of Medicine, 685 W. Baltimore St., HSF1 Room 480, Baltimore, MD 21201, United States of America. Electronic address:
Children with hemoglobin AC or AS have decreased susceptibility to clinical malaria. Parasite variant surface antigen (VSA) presentation on the surface of infected erythrocytes is altered in erythrocytes with hemoglobin C (Hb AC) or sickle trait (Hb AS) mutations in vitro. The protective role of incomplete or altered VSA presentation against clinical malaria in individuals with Hb AC or AS is unclear.
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