16-3727770-A-T

Variant names:

• chr16-3727770-A-T
• rs750047644
• NM_004380.3:c.7277T>A

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4 BS2

The NM_004380.3(CREBBP):​c.7277T>A​(p.Leu2426Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000205 in 1,461,862 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.000021 (0 hom.)
• Consequence: CREBBP NM_004380.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:3
• Conservation: PhyloP100: 7.39
• Publications: 0 publications found

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]

CREBBP Gene-Disease associations (from GenCC):

• Rubinstein-Taybi syndrome

  Inheritance: AD Classification: DEFINITIVE Submitted by: Illumina, ClinGen
• Rubinstein-Taybi syndrome due to CREBBP mutations

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
• Menke-Hennekam syndrome 1

  Inheritance: AD Classification: STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.35716957).
• BS2: High AC in GnomAdExome4 at 30 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004380.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CREBBP	NM_004380.3	MANE Select	c.7277T>A	p.Leu2426Gln	missense	Exon 31 of 31	NP_004371.2	Q92793-1
	CREBBP	NM_001079846.1		c.7163T>A	p.Leu2388Gln	missense	Exon 30 of 30	NP_001073315.1	Q92793-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CREBBP	ENST00000262367.10	TSL:1 MANE Select	c.7277T>A	p.Leu2426Gln	missense	Exon 31 of 31	ENSP00000262367.5	Q92793-1
	CREBBP	ENST00000382070.7	TSL:1	c.7163T>A	p.Leu2388Gln	missense	Exon 30 of 30	ENSP00000371502.3	Q92793-2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251452 AF XY: 0.00000736

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000879

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000205 AC: 30 AN: 1461862 Hom.: 0 Cov.: 32 AF XY: 0.0000234 AC XY: 17 AN XY: 727234

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53392

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000261 AC: 29 AN: 1112008

Other (OTH) AF: 0.0000166 AC: 1 AN: 60396

GnomAD4 genome Cov.: 31

Alfa AF: 0.00 Hom.: 0

ExAC AF: 0.00000824 AC: 1

EpiCase AF: 0.0000545

EpiControl AF: 0.0000593

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	CREBBP-related disorder (1)
-	1	-	Inborn genetic diseases (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.35
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Uncertain	0.0
CADD	Uncertain	25
DANN	Benign	0.95
DEOGEN2	Uncertain	0.46	T
Eigen	Uncertain	0.56
Eigen_PC	Uncertain	0.61
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.91	D
M_CAP	Benign	0.045	D
MetaRNN	Benign	0.36	T
MetaSVM	Uncertain	0.32	D
MutationAssessor	Benign	1.4	L
PhyloP100		7.4
PrimateAI	Uncertain	0.61	T
PROVEAN	Benign	-1.9	N
REVEL	Uncertain	0.44
Sift	Uncertain	0.0010	D
Sift4G	Benign	0.096	T
Polyphen		0.97	D
Vest4		0.35
MutPred		0.24		Gain of solvent accessibility (P = 0.0044)
MVP		0.84
MPC		0.40
ClinPred		0.78	D
GERP RS		5.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.39
gMVP		0.28
Mutation Taster		=69/31	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.14		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs750047644; hg19: chr16-3777771;