NM_001041.4:c.517C>G

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001041.4(SI):c.517C>G(p.Pro173Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00235 in 1,610,858 control chromosomes in the GnomAD database, including 70 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P173S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.013 ( 38 hom., cov: 32)

Exomes 𝑓: 0.0013 ( 32 hom. )

Consequence

SI
NM_001041.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: 8.26

Publications

4 publications found

Variant links:

Genes affected

SI (HGNC:10856): (sucrase-isomaltase) This gene encodes a sucrase-isomaltase enzyme that is expressed in the intestinal brush border. The encoded protein is synthesized as a precursor protein that is cleaved by pancreatic proteases into two enzymatic subunits sucrase and isomaltase. These two subunits heterodimerize to form the sucrose-isomaltase complex. This complex is essential for the digestion of dietary carbohydrates including starch, sucrose and isomaltose. Mutations in this gene are the cause of congenital sucrase-isomaltase deficiency.[provided by RefSeq, Apr 2010]

SI Gene-Disease associations (from GenCC):

congenital sucrase-isomaltase deficiency
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Laboratory for Molecular Medicine, PanelApp Australia, Labcorp Genetics (formerly Invitae), Orphanet

SI links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.009579778).

BP6

Variant 3-165067458-G-C is Benign according to our data. Variant chr3-165067458-G-C is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 445929.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0127 (1928/152038) while in subpopulation AFR AF = 0.0439 (1819/41480). AF 95% confidence interval is 0.0422. There are 38 homozygotes in GnomAd4. There are 941 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 38 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001041.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SI	NM_001041.4	MANE Select	c.517C>G	p.Pro173Ala	missense	Exon 6 of 48	NP_001032.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SI	ENST00000264382.8	TSL:1 MANE Select	c.517C>G	p.Pro173Ala	missense	Exon 6 of 48	ENSP00000264382.3

Frequencies

GnomAD3 genomes

AF:

0.0126

AC:

1915

AN:

151920

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0437

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00519

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00637

Gnomad NFE

AF:

0.000235

Gnomad OTH

AF:

0.00527

GnomAD2 exomes

AF:

0.00341

AC:

857

AN:

251150

AF XY:

0.00247

show subpopulations

Gnomad AFR exome

AF:

0.0455

Gnomad AMR exome

AF:

0.00275

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000115

Gnomad OTH exome

AF:

0.00114

GnomAD4 exome

AF:

0.00127

AC:

1853

AN:

1458820

Hom.:

Cov.:

AF XY:

0.00108

AC XY:

783

AN XY:

725920

show subpopulations

African (AFR)

AF:

0.0437

AC:

1458

AN:

33368

American (AMR)

AF:

0.00288

AC:

129

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26098

East Asian (EAS)

AF:

0.00

AC:

AN:

39546

South Asian (SAS)

AF:

0.000128

AC:

AN:

86178

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53392

Middle Eastern (MID)

AF:

0.00278

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

0.0000901

AC:

100

AN:

1109518

Other (OTH)

AF:

0.00231

AC:

139

AN:

60246

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.455

Heterozygous variant carriers

165

248

330

413

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

144

192

240

<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:

0.0127

AC:

1928

AN:

152038

Hom.:

Cov.:

AF XY:

0.0127

AC XY:

941

AN XY:

74322

show subpopulations

African (AFR)

AF:

0.0439

AC:

1819

AN:

41480

American (AMR)

AF:

0.00518

AC:

AN:

15254

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5168

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10582

Middle Eastern (MID)

AF:

0.00685

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.000235

AC:

AN:

67952

Other (OTH)

AF:

0.00569

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

187

280

374

467

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<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:

0.000947

Hom.:

Bravo

AF:

0.0143

ESP6500AA

AF:

0.0452

AC:

199

ESP6500EA

AF:

0.000465

AC:

ExAC

AF:

0.00413

AC:

502

Asia WGS

AF:

0.00348

AC:

AN:

3466

EpiCase

AF:

0.000109

EpiControl

AF:

0.000119

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Apr 27, 2017

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

Sucrase-isomaltase deficiency

Benign:1

Oct 12, 2017

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases was too high to be consistent with this variant causing disease. Therefore, this variant is classified as benign.

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.22

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.40

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.64

Eigen

Pathogenic

0.85

Eigen_PC

Pathogenic

0.69

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.84

MetaRNN

Benign

0.0096

MetaSVM

Uncertain

-0.27

MutationAssessor

Pathogenic

4.1

PhyloP100

8.3

PrimateAI

Uncertain

0.52

PROVEAN

Pathogenic

-5.8

REVEL

Uncertain

0.36

Sift

Uncertain

0.0080

Sift4G

Uncertain

0.0020

Polyphen

1.0

Vest4

0.83

MVP

0.87

MPC

0.14

ClinPred

0.064

GERP RS

4.9

Varity_R

0.70

gMVP

0.63

Mutation Taster

=90/10

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

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over