Genetic Variant SCT:p.Arg4Gln (chr11-627133-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_021920.4(SCT):c.11G>A(p.Arg4Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000567 in 289,482 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R4W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0010 ( 0 hom. )

Consequence

SCT
NM_021920.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -2.48

Variant links:

Genes affected

SCT (HGNC:10607): (secretin) This gene encodes a member of the glucagon family of peptides. The encoded preproprotein is secreted by endocrine S cells in the proximal small intestinal mucosa as a prohormone, then proteolytically processed to generate the mature peptide hormone. The release of this active peptide hormone is stimulated by either fatty acids or acidic pH in the duodenum. This hormone stimulates the secretion of bile and bicarbonate in the duodenum, pancreatic and biliary ducts. [provided by RefSeq, Feb 2016]

SCT links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.053502977).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SCT	NM_021920.4 link	c.11G>A	p.Arg4Gln	missense_variant	Exon 1 of 4	ENST00000176195.4	NP_068739.1	P09683

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SCT	ENST00000176195.4 link	c.11G>A	p.Arg4Gln	missense_variant	Exon 1 of 4	1	NM_021920.4	ENSP00000176195.3		P09683

Frequencies

GnomAD3 genomes

AF:

0.0000656

AC:

AN:

137184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000264

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000251

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000112

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00102

AC:

155

AN:

152298

Hom.:

Cov.:

AF XY:

0.00102

AC XY:

AN XY:

74414

show subpopulations

Gnomad4 AFR exome

AF:

0.000311

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000386

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00117

Gnomad4 OTH exome

AF:

0.00101

GnomAD4 genome

AF:

0.0000656

AC:

AN:

137184

Hom.:

Cov.:

AF XY:

0.0000749

AC XY:

AN XY:

66712

show subpopulations

Gnomad4 AFR

AF:

0.0000264

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000251

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000112

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000604

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 09, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.11G>A (p.R4Q) alteration is located in exon 1 (coding exon 1) of the SCT gene. This alteration results from a G to A substitution at nucleotide position 11, causing the arginine (R) at amino acid position 4 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.33

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.70

CADD

Benign

DANN

Benign

0.94

DEOGEN2

Benign

0.17

Eigen

Benign

-1.7

Eigen_PC

Benign

-1.8

FATHMM_MKL

Benign

0.0030

M_CAP

Benign

0.010

MetaRNN

Benign

0.054

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.26

PrimateAI

Uncertain

0.73

PROVEAN

Benign

-1.8

REVEL

Benign

0.015

Sift

Pathogenic

0.0

Sift4G

Benign

0.41

Polyphen

0.028

Vest4

0.037

MutPred

0.22

Loss of methylation at R4 (P = 0.041);

MVP

0.14

MPC

0.29

ClinPred

0.051

GERP RS

-4.2

Varity_R

0.087

gMVP

0.18

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over