What Is Mucopolysaccharidosis? Mucopolysaccharidosis (MPS) refers to a group of rare hereditary lysosomal storage diseases, triggered by deficiencies of specific enzymes responsible for degrading glycosaminoglycans (GAGs), also known as acid mucopolysaccharides. MPS damages multiple bodily systems, with core manifestations including…
What Is Glycogen Storage Disease (Type I & Type II)? Glycogen Storage Disease (GSD) is a rare autosomal recessive metabolic disorder triggered by deficiencies in enzymes involved in glycogen synthesis or breakdown, resulting in abnormal glycogen accumulation in the liver,…
What Is Neuromyelitis Optica Spectrum Disorder? Neuromyelitis Optica Spectrum Disorder (NMOSD) is a rare autoimmune disease targeting the central nervous system (CNS). Its hallmark clinical manifestations include recurrent optic neuritis and longitudinally extensive transverse myelitis, which frequently lead to severe…
What Is Fabry Disease? Fabry Disease (FD) is a rare X-linked lysosomal storage disorder caused by pathogenic variants in the GLA gene, which triggers a wide spectrum of clinical manifestations. The global incidence of Fabry Disease is approximately 1 in…
What Is Hepatolenticular Degeneration? Hepatolenticular Degeneration, also known as Wilson Disease (WD), is a rare autosomal recessive genetic disorder caused by mutations in the ATP7B gene, which leads to abnormal copper accumulation in organs including the liver, brain and cornea.…
Achondroplasia (ACH) is a common genetic skeletal dysplasia. Its core clinical manifestations include disproportionate short stature, macrocephaly with frontal bossing, midface hypoplasia, and bowed tibia. The incidence ranges from 1 in 15,000 to 1 in 25,000 live births. Pathogenesis The…
Albinism is a rare hereditary disorder. It is primarily caused by the deficiency or dysfunction of tyrosinase, which disrupts melanin synthesis and leads to pigment loss in the skin, hair and eyes. Without the protection of melanin, patients are vulnerable…
Cystic fibrosis is an autosomal recessive rare hereditary disorder triggered by pathogenic mutations in the CFTR gene located on the long arm of human chromosome 7. Gene defects impair chloride transport across epithelial cells and trigger excessive sodium & water…
August 7 marks International Spinal Muscular Atrophy (SMA) Awareness Day. Spinal Muscular Atrophy (SMA) is an autosomal recessive neuromuscular disorder primarily caused by loss-of-function mutations in the survival motor neuron 1 (SMN1) gene. This leads to degeneration of anterior horn…
Gaucher’s disease (GD) is a rare autosomal recessive lysosomal storage disorder. The core cause is mutations in the glucocerebrosidase (GBA) gene, which drastically reduce or completely abolish enzyme activity. As a result, the substrate glucosylceramide (GlcCer) cannot be properly hydrolyzed…
