chr16-30700873-A-G

Variant names:

• chr16-30700873-A-G
• NM_006662.3:c.49A>G

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_Moderate BS2

The NM_006662.3(SRCAP):​c.49A>G​(p.Thr17Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000684 in 1,461,830 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000068 (0 hom.)
• Consequence: SRCAP NM_006662.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.28
• Publications: 0 publications found

Genes affected

SRCAP (HGNC:16974): (Snf2 related CREBBP activator protein) This gene encodes the core catalytic component of the multiprotein chromatin-remodeling SRCAP complex. The encoded protein is an ATPase that is necessary for the incorporation of the histone variant H2A.Z into nucleosomes. It can function as a transcriptional activator in Notch-mediated, CREB-mediated and steroid receptor-mediated transcription. Mutations in this gene cause Floating-Harbor syndrome, a rare disorder characterized by short stature, language deficits and dysmorphic facial features. [provided by RefSeq, Feb 2012]

SRCAP Gene-Disease associations (from GenCC):

• developmental delay, hypotonia, musculoskeletal defects, and behavioral abnormalities

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), PanelApp Australia
• Floating-Harbor syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Ambry Genetics, PanelApp Australia, ClinGen, Labcorp Genetics (formerly Invitae), Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -6 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.10793644).
• BS2: High AC in GnomAdExome4 at 10 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006662.3. 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
	SRCAP	NM_006662.3	MANE Select	c.49A>G	p.Thr17Ala	missense	Exon 3 of 34	NP_006653.2	Q6ZRS2-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SRCAP	ENST00000262518.9	TSL:2 MANE Select	c.49A>G	p.Thr17Ala	missense	Exon 3 of 34	ENSP00000262518.4	Q6ZRS2-1
	SRCAP	ENST00000411466.7	TSL:3	c.49A>G	p.Thr17Ala	missense	Exon 3 of 34	ENSP00000405186.3	C9J4U4
	SRCAP	ENST00000706321.1		c.49A>G	p.Thr17Ala	missense	Exon 3 of 34	ENSP00000516346.1	Q6ZRS2-1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000684 AC: 10 AN: 1461830 Hom.: 0 Cov.: 30 AF XY: 0.00000688 AC XY: 5 AN XY: 727216

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53412

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

European-Non Finnish (NFE) AF: 0.00000809 AC: 9 AN: 1111970

Other (OTH) AF: 0.0000166 AC: 1 AN: 60394

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.093
BayesDel_addAF	Uncertain	0.021	T
BayesDel_noAF	Benign	-0.21
CADD	Benign	21
DANN	Benign	0.90
DEOGEN2	Benign	0.048	T
Eigen	Benign	-0.35
Eigen_PC	Benign	-0.15
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Benign	0.58	T
M_CAP	Benign	0.019	T
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-0.87	T
MutationAssessor	Benign	0.20	N
PhyloP100		2.3
PrimateAI	Uncertain	0.72	T
PROVEAN	Pathogenic	-4.6	D
REVEL	Benign	0.20
Sift	Uncertain	0.0090	D
Sift4G	Pathogenic	0.0	D
Polyphen		0.063	B
Vest4		0.099
MutPred		0.17		Gain of helix (P = 0.0225)
MVP		0.16
MPC		0.011
ClinPred		0.27	T
GERP RS		4.0
Varity_R		0.16
gMVP		0.53
Mutation Taster		=85/15	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.080		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

hg19: chr16-30712194;