Genetic Variant SNAPC2:p.Glu93Gln (chr19-7921516-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_003083.4(SNAPC2):c.277G>C(p.Glu93Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,196 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 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. E93K) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

SNAPC2
NM_003083.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.475

Publications

0 publications found

Variant links:

Genes affected

SNAPC2 (HGNC:11135): (small nuclear RNA activating complex polypeptide 2) This gene encodes a subunit of the snRNA-activating protein complex which is associated with the TATA box-binding protein. The encoded protein is necessary for RNA polymerase II and III dependent small-nuclear RNA gene transcription. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2009]

SNAPC2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.06476715).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003083.4. 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
	SNAPC2	NM_003083.4	MANE Select	c.277G>C	p.Glu93Gln	missense	Exon 2 of 5	NP_003074.1	Q13487
	SNAPC2	NR_030717.2		n.199G>C		non_coding_transcript_exon	Exon 2 of 5

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SNAPC2	ENST00000221573.11	TSL:1 MANE Select	c.277G>C	p.Glu93Gln	missense	Exon 2 of 5	ENSP00000221573.5	Q13487
SNAPC2	ENST00000597584.5	TSL:1	c.-435G>C		5_prime_UTR	Exon 2 of 5	ENSP00000471962.1	M0R1L8
SNAPC2	ENST00000853925.1		c.277G>C	p.Glu93Gln	missense	Exon 2 of 5	ENSP00000523984.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461196

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726876

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33466

American (AMR)

AF:

0.00

AC:

AN:

44660

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26074

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86220

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53238

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5750

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111726

Other (OTH)

AF:

0.00

AC:

AN:

60362

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

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.098

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.68

CADD

Benign

(source)

DANN

Benign

0.80

DEOGEN2

Benign

0.0026

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.088

LIST_S2

Benign

0.58

M_CAP

Benign

0.0052

MetaRNN

Benign

0.065

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.40

PhyloP100

0.47

PrimateAI

Benign

0.34

PROVEAN

Benign

-0.70

REVEL

Benign

0.013

Sift

Benign

0.30

Sift4G

Benign

0.53

Polyphen

0.021

Vest4

0.13

MutPred

0.20

Gain of MoRF binding (P = 0.0542)

MVP

0.36

MPC

0.15

ClinPred

0.073

GERP RS

-0.88

Varity_R

0.058

gMVP

0.29

Mutation Taster

=97/3

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over