SCAF8

Chr 6

SR-related CTD associated factor 8

Also known as: RBM16

The SCAF8 protein prevents premature termination of RNA polymerase II transcription by binding to nascent RNA and suppressing early polyadenylation sites, thereby ensuring production of full-length functional proteins. Mutations cause autosomal dominant neurodevelopmental disorder with microcephaly, epilepsy, and brain malformations. This gene is highly constrained against loss-of-function variants, reflecting its critical role in normal development.

OMIMResearchSummary from RefSeq, UniProt
LOFmechanismLOEUF 0.10
Clinical SummarySCAF8
Population Constraint (gnomAD)
Highly constrained gene — heterozygous loss-of-function variants are very rare in the population (pLI 1.00). One damaged copy is likely sufficient to cause disease.
📋
ClinVar Variants
26 unique Pathogenic / Likely Pathogenic· 145 VUS of 202 total submissions

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

LoF intolerant — likely haploinsufficient
LoF Constraint
0.10LOEUF
pLI 1.000
Z-score 7.27
OE 0.03 (0.010.10)
Highly constrained

Among the most LoF-intolerant genes (~top 3%)

Missense Constraint
1.90Z-score
OE missense 0.80 (0.740.86)
560 obs / 701.5 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios
LoF OE0.03 (0.010.10)
00.351.4
Missense OE0.80 (0.740.86)
00.61.4
Synonymous OE1.21
01.21.6
LoF obs/exp: 2 / 65.5Missense obs/exp: 560 / 701.5Syn Z: -2.62
DN
0.2698th %ile
GOF
0.2497th %ile
LOF
0.84top 5%

The highest-scoring mechanism for this gene is loss-of-function (haploinsufficiency).

LOFprediction above median · LOEUF 0.10

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312. Mechanism ranking also informed by gnomAD constraint, ClinVar, and ClinGen data.

ClinVar Variant Classifications

202 submitted variants in ClinVar

Classification Summary

Pathogenic24
Likely Pathogenic2
VUS145
Likely Benign6
24
Pathogenic
2
Likely Pathogenic
145
VUS
6
Likely Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
24
0
24
Likely Pathogenic
0
0
2
0
2
VUS
1
141
2
1
145
Likely Benign
1
5
0
0
6
Benign
0
0
0
0
0
Total2146281177

LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly

View in ClinVar →

Protein Context — Lollipop Plot

SCAF8 · protein map & ClinVar variants

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

3D Protein StructureAlphaFold

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →
Clinical Literature
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