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ACVR1

Synonyms
ACTRI, ACVR1A, ACVRLK2, ALK2, FOP, SKR1, TSRI
External resources
Summary
Activins are dimeric growth and differentiation factors which belong to the transforming growth factor-beta (TGF-beta) superfamily of structurally related signaling proteins. Activins signal through a heteromeric complex of receptor serine kinases which include at least two type I ( I and IB) and two type II (II and IIB) receptors. These receptors are all transmembrane proteins, composed of a ligand-binding extracellular domain with cysteine-rich region, a transmembrane domain, and a cytoplasmic domain with predicted serine/threonine specificity. Type I receptors are essential for signaling; and type II receptors are required for binding ligands and for expression of type I receptors. Type I and II receptors form a stable complex after ligand binding, resulting in phosphorylation of type I receptors by type II receptors. This gene encodes activin A type I receptor which signals a particular transcriptional response in concert with activin type II receptors. Mutations in this gene are associated with fibrodysplasia ossificans progressive.

Variant counts

The variants found in rare patients tested by 3billion are classified and counted according to ACMG guidelines. The variants with over 5% variant frequency in population genome databases ( gnomAD, dbSNP, etc) are excluded.

Pathogenic
3
Likely pathogenic
0
VUS
593
Likely benign
4,881
Benign
2,028

Patient phenotypes

Proportions of phenotypes among 3 patients carrying pathogenic or likely pathogenic variants on ACVR1 gene are displayed below.

Phenotype class
Patients in 3billion (%)
Abnormality of the musculoskeletal system
100%
Abnormality of head or neck
66.7%
Abnormality of limbs
66.7%
Constitutional symptom
66.7%
Abnormality of the ear
33.3%
Abnormality of the immune system
33.3%
Abnormality of the nervous system
33.3%
Neoplasm
33.3%
Abnormal cellular phenotype
0%
Abnormality of blood and blood-forming tissues
0%
Abnormality of metabolism homeostasis
0%
Abnormality of prenatal development or birth
0%
Abnormality of the breast
0%
Abnormality of the cardiovascular system
0%
Abnormality of the digestive system
0%
Abnormality of the endocrine system
0%
Abnormality of the eye
0%
Abnormality of the genitourinary system
0%
Abnormality of the integument
0%
Abnormality of the respiratory system
0%
Abnormality of the thoracic cavity
0%
Abnormality of the voice
0%
Growth abnormality
0%

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