Alport syndrome (ATS) is a hereditary hematuric nephropathy with frequent hearing loss and ocular anomalies. Defects of basement membranes arise from mutations in alpha 3, alpha 4, and alpha 5 type IV collagen chains. The mode of inheritance is either X-linked or autosomal recessive, although autosomal dominant form has been observed in a few families. Male patients with X-linked Alport syndrome suffer from severe renal symptoms that progress to end-stage renal disease associated with deafness which starts during the first decade of life, and ocular lesions including anterior lenticonus. Autosomal recessive Alport syndrome is usually severe, showing progressive nephritis and hearing impairment.
Category
Congenital malformation
Brite
Human diseases in ICD-11 classification [BR:br08403]
20 Developmental anomalies
Multiple developmental anomalies or syndromes
LD2H Syndromic genetic deafness
H00581 Alport syndrome
Pathway-based classification of diseases [BR:br08402]
Cellular process
nt06539 Cytoskeleton in muscle cells
H00581 Alport syndrome
Benign familial hematuria is an autosomal dominant disorder characterized by recurrent dysmorphic hematuria detected in childhood. The glomerular basement membrane is uniformly thin, but renal function is normal. Heterozygous mutations in COL4A3 or COL4A4 lead to reduced collagen network levels in the basement membrane.
Category
Urinary system disease
Brite
Human diseases in ICD-11 classification [BR:br08403]
16 Diseases of the genitourinary system
Diseases of the urinary system
Glomerular diseases
GB4Y Other specified glomerular diseases
H00582 Benign familial hematuria
Pathway-based classification of diseases [BR:br08402]
Cellular process
nt06539 Cytoskeleton in muscle cells
H00582 Benign familial hematuria
Badenas C, Praga M, Tazon B, Heidet L, Arrondel C, Armengol A, Andres A, Morales E, Camacho JA, Lens X, Davila S, Mila M, Antignac C, Darnell A, Torra R
Title
Mutations in theCOL4A4 and COL4A3 genes cause familial benign hematuria.
