NM_004380.3:c.5770G>C

Variant names:

• chr16-3729277-C-G
• rs368145743
• NM_004380.3:c.5770G>C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2 PP2 BP4_Moderate

The NM_004380.3(CREBBP):​c.5770G>C​(p.Val1924Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V1924M) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: CREBBP NM_004380.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.20

Genes affected

CREBBP (HGNC:2348): (CREB binding protein) This gene is ubiquitously expressed and is involved in the transcriptional coactivation of many different transcription factors. First isolated as a nuclear protein that binds to cAMP-response element binding protein (CREB), this gene is now known to play critical roles in embryonic development, growth control, and homeostasis by coupling chromatin remodeling to transcription factor recognition. The protein encoded by this gene has intrinsic histone acetyltransferase activity and also acts as a scaffold to stabilize additional protein interactions with the transcription complex. This protein acetylates both histone and non-histone proteins. This protein shares regions of very high sequence similarity with protein p300 in its bromodomain, cysteine-histidine-rich regions, and histone acetyltransferase domain. Mutations in this gene cause Rubinstein-Taybi syndrome (RTS). Chromosomal translocations involving this gene have been associated with acute myeloid leukemia. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Feb 2009]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the CREBBP gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 106 curated pathogenic missense variants (we use a threshold of 10). The gene has 165 curated benign missense variants. Gene score misZ: 3.8991 (above the threshold of 3.09). Trascript score misZ: 4.7573 (above the threshold of 3.09). GenCC associations: The gene is linked to Menke-Hennekam syndrome 1, Rubinstein-Taybi syndrome due to CREBBP mutations, Rubinstein-Taybi syndrome.
• BP4: Computational evidence support a benign effect (MetaRNN=0.19628444).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CREBBP	NM_004380.3	c.5770G>C	p.Val1924Leu	missense_variant	Exon 31 of 31	ENST00000262367.10	NP_004371.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CREBBP	ENST00000262367.10	c.5770G>C	p.Val1924Leu	missense_variant	Exon 31 of 31	1	NM_004380.3	ENSP00000262367.5
CREBBP	ENST00000382070.7	c.5656G>C	p.Val1886Leu	missense_variant	Exon 30 of 30	1		ENSP00000371502.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1380554 Hom.: 0 Cov.: 35 AF XY: 0.00 AC XY: 0 AN XY: 680386

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Uncertain	0.056	T
BayesDel_noAF	Benign	-0.16
CADD	Benign	23
DANN	Benign	0.95
DEOGEN2	Benign	0.40	T;.
Eigen	Benign	-0.19
Eigen_PC	Benign	0.029
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.87	D;D
M_CAP	Uncertain	0.11	D
MetaRNN	Benign	0.20	T;T
MetaSVM	Benign	-0.60	T
MutationAssessor	Benign	1.2	L;.
PrimateAI	Uncertain	0.69	T
PROVEAN	Benign	-0.86	N;N
REVEL	Uncertain	0.31
Sift	Benign	0.60	T;T
Sift4G	Benign	0.92	T;T
Polyphen		0.17	B;.
Vest4		0.24
MutPred		0.23		Loss of MoRF binding (P = 0.1752);.;
MVP		0.79
MPC		1.3
ClinPred		0.45	T
GERP RS		5.2
Varity_R		0.21
gMVP		0.095

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs368145743; hg19: chr16-3779278;