chr16-30721227-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_006662.3(SRCAP):c.3292C>T(p.Arg1098Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000626 in 1,613,168 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 Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1098P) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000067 ( 0 hom. )

Consequence

SRCAP
NM_006662.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: 0.351

Publications

2 publications found

Variant links:

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: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
Floating-Harbor syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, ClinGen, Ambry Genetics, Labcorp Genetics (formerly Invitae)

SRCAP links:

ENSG00000282034 (HGNC:):

ENSG00000282034 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.19920868).

BP6

Variant 16-30721227-C-T is Benign according to our data. Variant chr16-30721227-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 599466.

BS2

High AC in GnomAdExome4 at 98 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SRCAP	NM_006662.3 link	c.3292C>T	p.Arg1098Trp	missense_variant	Exon 21 of 34	ENST00000262518.9	NP_006653.2	Q6ZRS2-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SRCAP	ENST00000262518.9 link	c.3292C>T	p.Arg1098Trp	missense_variant	Exon 21 of 34	2	NM_006662.3	ENSP00000262518.4		Q6ZRS2-1
ENSG00000282034	ENST00000380361.7 link	n.3196+249C>T		intron_variant	Intron 17 of 30	2		ENSP00000369719.3		A0A0C4DFX4

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152170

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000242

AC:

AN:

248296

AF XY:

0.0000372

show subpopulations

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:

0.0000539

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000671

AC:

AN:

1460998

Hom.:

Cov.:

AF XY:

0.0000729

AC XY:

AN XY:

726774

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44682

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26044

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86140

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53276

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5756

European-Non Finnish (NFE)

AF:

0.0000837

AC:

AN:

1111564

Other (OTH)

AF:

0.0000663

AC:

AN:

60364

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.464

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152170

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74326

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41440

American (AMR)

AF:

0.00

AC:

AN:

15276

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000192

AC:

AN:

5196

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000387

Hom.:

Bravo

AF:

0.0000264

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Jul 12, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 1098 of the SRCAP protein (p.Arg1098Trp). This variant is present in population databases (rs556230791, gnomAD 0.006%). This variant has not been reported in the literature in individuals affected with SRCAP-related conditions. ClinVar contains an entry for this variant (Variation ID: 599466). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt SRCAP protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

not specified

Benign:1

Jul 17, 2017

Institute for Genomic Medicine (IGM) Clinical Laboratory, Nationwide Children's Hospital

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

BS1, BS2, BP1; This alteration has an allele frequency that is greater than expected for the associated disease, was seen in a healthy adult where full penetrance of the disorder is expected at an early age, and is a missense alteration in a gene for which primarily truncating variants are known to cause disease. -

Floating-Harbor syndrome;C5562012:Developmental delay, hypotonia, musculoskeletal defects, and behavioral abnormalities

Benign:1

Dec 28, 2021

Fulgent Genetics, Fulgent Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Uncertain

0.021

BayesDel_noAF

Uncertain

-0.050

CADD

Benign

(source)

DANN

Benign

0.96

DEOGEN2

Benign

0.047

T;T

Eigen

Benign

-0.48

Eigen_PC

Benign

-0.32

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.93

D;D

M_CAP

Benign

0.068

MetaRNN

Benign

0.20

T;T

MetaSVM

Benign

-0.37

MutationAssessor

Benign

0.69

N;.

PhyloP100

0.35

PrimateAI

Uncertain

0.60

PROVEAN

Benign

-2.1

N;.

REVEL

Uncertain

0.37

Sift

Pathogenic

0.0

D;.

Sift4G

Uncertain

0.025

D;D

Polyphen

0.016

B;.

Vest4

0.58

MutPred

0.23

Loss of methylation at R1098 (P = 0.0329);.;

MVP

0.33

MPC

0.56

ClinPred

0.29

GERP RS

0.87

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.15

gMVP

0.20

Mutation Taster

=80/20

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over