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Dystonia 37, early-onset, with striatal lesions
Early-onset dystonia-37 with striatal lesions (DYT37) is an autosomal recessive neurologic movement disorder characterized by the onset of progressive dystonia, dysphagia, and choreoathetosis in the first months or years of life. Affected individuals show delayed motor development and may have impaired intellectual development. The disorder is severely disabling; patients lose ambulation and require tube-feeding. Brain imaging shows hyperintense lesions affecting the basal ganglia and striatum (Harrer et al., 2023). [from OMIM]
Intellectual developmental disorder, autosomal recessive 79
Autosomal recessive intellectual developmental disorder-79 (MRT79) is characterized by global developmental delay apparent from infancy. Affected individuals have mildly delayed walking with an ataxic gait and severely impaired intellectual development with poor or absent speech. Additional features may include postnatal microcephaly and dysmorphic features (Van Bergen et al., 2022). [from OMIM]
Autoinflammation with pulmonary and cutaneous vasculitis
Autoinflammation with pulmonary and cutaneous vasculitis (AIPCV) is a disorder of immune dysregulation manifest as skin lesions (petechiae and purpura) appearing soon after birth followed by progressive pulmonary involvement causing restrictive lung disease and respiratory insufficiency. Other features may include hepatosplenomegaly and anemia (Kanderova et al., 2022). [from OMIM]
Neurodevelopmental disorder with poor growth, spastic tetraplegia, and hearing loss
Birk-Aharoni syndrome (BKAH) is a severe neurodevelopmental disorder characterized developmental delay, impaired intellectual development, absent speech, spastic tetraplegia with central hypotonia, chorea, inability to walk, hearing loss, micropenis, undescended testes, and mildly elevated liver enzymes (Aharoni et al., 2022). [from OMIM]
Neurodevelopmental disorder with microcephaly, hypotonia, and absent language
Neurodevelopmental disorder with microcephaly, hypotonia, and absent language (NEDMHAL) is a severe autosomal recessive disorder characterized by the constellation of these features. Behavioral problems and hearing loss are also present (Ansar et al., 2020). [from OMIM]
Usmani-Riazuddin syndrome, autosomal recessive
Autosomal recessive Usmani-Riazzudin syndrome (USRISR) is a neurodevelopmental disorder characterized by global developmental delay with impaired intellectual development and speech delay, hypotonia, spasticity, and behavioral abnormalities, most commonly aggressive behavior. More variable additional features may include seizures, scoliosis, and joint laxity (Usmani et al., 2021). [from OMIM]
Usmani-Riazuddin syndrome, autosomal dominant
Autosomal dominant Usmani-Riazzudin syndrome (USRISD) is a neurodevelopmental disorder characterized by global developmental delay with impaired intellectual development and speech delay, hypotonia, and behavioral abnormalities, most commonly aggressive behavior. More variable additional features may include seizures and distal limb anomalies (summary by Usmani et al., 2021). [from OMIM]
Immunodeficiency 79
Immunodeficiency-79 (IMD79) is an autosomal recessive disorder characterized by childhood onset of recurrent and recalcitrant skin warts due to uncontrolled viral infection with human papillomavirus (HPV). Some patients may also have recurrent respiratory infections beginning in childhood, but the phenotype overall is mild compared to other primary immunodeficiencies. Patients may not come to attention until adulthood. Laboratory studies show absence of the CD4 antigen on T cells, monocytes, and dendritic cells, with variable secondary abnormalities in B cells and NK cells due to lack of CD4+ T cells (summary by Lisco et al., 2021). [from OMIM]
Deafness, cataract, impaired intellectual development, and polyneuropathy
Deafness, cataract, impaired intellectual development, and polyneuropathy (DCIDP) is characterized by early-onset of deafness, cataract, severe developmental delay, and severely impaired intellectual development. Patients later develop polyneuropathy of the lower extremities, associated with depigmentation of the hair in that area (Kroll-Hermi et al., 2020). [from OMIM]
Proteasome-associated autoinflammatory syndrome 5
Sandestig-stefanova syndrome
Sandestig-Stefanova syndrome (SANDSTEF) is an autosomal recessive developmental syndrome characterized by pre- and postnatal microcephaly, trigonocephaly, congenital cataract, microphthalmia, facial gestalt, camptodactyly, loss of periventricular white matter, thin corpus callosum, delayed myelinization, and poor prognosis (Sandestig et al., 2019). [from OMIM]
Intellectual developmental disorder 60 with seizures
Autosomal dominant intellectual developmental disorder-60 with seizures is characterized by global developmental delay apparent in infancy, followed by onset of seizures in the first years of life. Patients have delayed walking, an ataxic gait, and moderately to severely impaired intellectual development with poor speech (summary by Helbig et al., 2019). [from OMIM]
Galloway-Mowat syndrome 7
Galloway-Mowat syndrome-7 (GAMOS7) is an autosomal recessive disorder characterized by developmental delay, microcephaly, and early-onset nephrotic syndrome (summary by Rosti et al., 2017). For a general phenotypic description and a discussion of genetic heterogeneity of GAMOS, see GAMOS1 (251300). [from OMIM]
Galloway-Mowat syndrome 8
Galloway-Mowat syndrome-8 is an autosomal recessive disorder characterized by impaired psychomotor development, poor overall growth with microcephaly, and early-onset progressive nephrotic syndrome associated with focal segmental glomerulosclerosis on renal biopsy. Some patients may have seizures, and some may die in childhood (summary by Fujita et al., 2018). For a general phenotypic description and a discussion of genetic heterogeneity of GAMOS, see GAMOS1 (251300). [from OMIM]
Fetal akinesia deformation sequence 4
Fetal akinesia deformation sequence-4 (FADS4) is an autosomal recessive disorder characterized by decreased fetal movements due to impaired neuromuscular function, resulting in significant congenital contractures and death in utero or soon after birth (summary by Bonnin et al., 2018). For a general phenotypic description and a discussion of genetic heterogeneity of FADS, see 208150. [from OMIM]
Encephalopathy, acute, infection-induced, susceptibility to, 9
Susceptibility to acute infection-induced encephalopathy-9 (IIAE9) is an autosomal recessive disorder characterized by episodic acute neurodegeneration and developmental regression associated with infections and febrile illness. Patients present in the first months or years of life, often after normal or only mildly delayed early development. Some patients may have partial recovery between episodes, such as transient ataxia, but the overall disease course is progressive, resulting in global developmental delay, abnormal movements, refractory seizures, microcephaly, and cerebellar atrophy (summary by Fichtman et al., 2019). For a discussion of genetic heterogeneity of susceptibility to acute infection-induced encephalopathy, see 610551. [from OMIM]
Familial infantile bilateral striatal necrosis
Bilateral striatal necrosis (BSN) encompasses a heterogeneous group of neurologic disorders with different causation. Familial infantile striatal degeneration is rare and can be inherited as an autosomal recessive or mitochondrial (see 500003) disorder. The familial form has an insidious onset and a slowly progressive course; the sporadic form is associated with acute systemic illness. Many features of BSN overlap with Leigh syndrome (see 256000) and certain metabolic disorders, including glutaric acidemia I (231670) and methylmalonic aciduria (251000). See also Aicardi-Goutieres syndrome (225750) (Mito et al., 1986; De Meirleir et al., 1995). Genetic Heterogeneity of Striatonigral Degeneration Childhood-onset striatonigral degeneration (617054) is caused by mutation in the VAC14 gene (604632) on chromosome 16q22. See also adult-onset autosomal dominant striatal degeneration (ADSD; 609161), caused by mutation in the PDE8B gene (603390) on chromosome 5q13, and early-onset dystonia-37 with striatal lesions (DYT37; 620427), caused by mutation in the NUP54 gene (607607) on chromosome 4q21. [from OMIM]
Nephrotic syndrome, type 18
NPHS18, a disease of the renal glomerular filter, is characterized by proteinuria, edema, and hypoalbuminemia. It does not respond to drug treatment and inevitably progresses to end-stage renal disease, thus requiring dialysis or renal transplantation for survival. Renal histology shows focal segmental glomerulosclerosis (Braun et al., 2018). For a general phenotypic description and a discussion of genetic heterogeneity of nephrotic syndrome, see NPHS1 (256300). [from OMIM]
Proteasome-associated autoinflammatory syndrome 3
Proteasome-associated autoinflammatory syndrome-3 is an autosomal recessive syndrome with onset in early infancy. Affected individuals present with nodular dermatitis, recurrent fever, myositis, panniculitis-induced lipodystrophy, lymphadenopathy, and dysregulation of the immune response, particularly associated with abnormal type I interferon-induced gene expression patterns. Additional features are highly variable, but may include joint contractures, hepatosplenomegaly, anemia, thrombocytopenia, recurrent infections, autoantibodies, and hypergammaglobulinemia. Some patients may have intracranial calcifications (summary by Brehm et al., 2015). For a discussion of genetic heterogeneity of PRAAS, see PRAAS1 (256040). [from OMIM]
Microcephaly 24, primary, autosomal recessive
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