PDGFB

Chr 22AD

platelet derived growth factor subunit B

Also known as: IBGC5, PDGF-2, PDGF2, SIS, SSV, c-sis

This gene encodes a member of the protein family comprised of both platelet-derived growth factors (PDGF) and vascular endothelial growth factors (VEGF). The encoded preproprotein is proteolytically processed to generate platelet-derived growth factor subunit B, which can homodimerize, or alternatively, heterodimerize with the related platelet-derived growth factor subunit A. These proteins bind and activate PDGF receptor tyrosine kinases, which play a role in a wide range of developmental processes. Mutations in this gene are associated with meningioma. Reciprocal translocations between chromosomes 22 and 17, at sites where this gene and that for collagen type 1, alpha 1 are located, are associated with dermatofibrosarcoma protuberans, a rare skin tumor. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2015]

GeneReviewsOMIMResearchGenerating clinical summary…

Primary Disease Associations & Inheritance

Basal ganglia calcification, idiopathic, 5MIM #615483
AD
Meningioma, SIS-relatedMIM #607174
AD

Clinical highlights

Interpreting a novel variant
This gene is strongly intolerant of loss-of-function variation in the population, so LoF variants warrant close attention. No curated mechanism annotation is available — see the mechanism card for the computational prediction and its caveats.Based on population constraint only.
3
Active trials
165
Pubs (1 yr)
P/LP submissions
P/LP missense
0.46
LOEUF
DN
Mechanism· predicted
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GeneReview available — PDGFB
Authoritative clinical overview · Recommended first read
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Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Moderate LoF intolerance
LoF Constraint?
0.46LOEUF
pLI 0.770
Z-score 2.92
OE 0.15 (0.060.46)
Moderately constrained

More LoF-intolerant than ~75% of genes

Missense Constraint?
1.08Z-score
OE missense 0.77 (0.660.89)
129 obs / 168.5 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.15 (0.060.46)
00.351.4
Missense OE?0.77 (0.660.89)
00.61.4
Synonymous OE?1.05
01.21.6
LoF obs/exp: 2 / 13.6Missense obs/exp: 129 / 168.5Syn Z: -0.32

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

PDGFB · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.