Is CREBBP p.Gln1908fs (c.5722del) pathogenic?

CREBBP p.Gln1908fs (c.5722del) is classified Pathogenic in CREBBP (ClinVar, No assertion criteria, 1 submitter; last evaluated 2019-11-05). Very rare (popmax 7.06e-05%); Associated with Rubinstein-Taybi syndrome due to CREBBP mutations.

What condition is associated with CREBBP p.Gln1908fs (c.5722del)?

CREBBP p.Gln1908fs (c.5722del) is associated with Rubinstein-Taybi syndrome due to CREBBP mutations (ClinVar).

How common is CREBBP p.Gln1908fs (c.5722del) in the general population?

CREBBP p.Gln1908fs (c.5722del) is very rare (popmax 7.06e-05%) (gnomAD).

CREBBP p.Gln1908fs

c.5722del · rs1596786752 · VCV694830

Pathogenic No assertion criteria

Classification

Pathogenic

ClinVar

Review

No assertion criteria ☆☆☆☆

ClinVar · 1 submitter

Consequence

frameshift

predicted LoF

gnomAD v4.1

Rare

very rare (popmax 7.06e-05%)

Conditions

Rubinstein-Taybi syndrome due to CREBBP mutations

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequence	frameshift	predicted loss-of-function in a haploinsufficient gene (ClinGen)
NMD	escapes	premature termination codon in the last exon (31 of 31) — the truncated protein is likely expressed. PVS1 input, not an applied code
Splicing
SpliceAI	—	not assessed · substitutions only
Constraint at this position
Conservation	phyloP 6	GERP 1.9, phastCons 1
Region caveats
Repeat context	tandem	G-rich low complexity · ambiguous alignment · confidence, not pathogenicity

Predicted loss-of-function is descriptive, not an applied PVS1 code.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 7.06e-05%

Overall 7.06e-05% 1/1,415,862 alleles · very rare

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: CREBBP
Protein: p.Gln1908fs
Coding: c.5722del
MANE Select: NM_004380
dbSNP: rs1596786752
Type: Deletion
Location: chr16:3729325 (GRCh38)
Gene constraint: LOEUF 0.101 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 54.31 · 144 PDB
Residue 1908: the 'disordered' region

Full CREBBP gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Rubinstein-Taybi syndrome due to CREBBP mutations — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

CREBBP c.3369+1del Pathogenic ★★ same condition
CREBBP p.Ala403fs Likely pathogenic ★★ same condition
CREBBP p.Glu1034fs Pathogenic ★★ same condition
CREBBP p.Glu1551fs Pathogenic ★★ same condition
CREBBP p.Glu1560fs Pathogenic ★★ same condition
CREBBP p.Pro1946fs Pathogenic/Likely pathogenic ★★ same condition
CREBBP p.Ser1898fs Pathogenic/Likely pathogenic ★★ same condition
CREBBP p.Pro1077del Uncertain significance ★★ same condition

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/crebbp-p-gln1908fs (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown