Genetic Variant ITLN1:p.Thr171Met (chr1-160881206-G-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PP3_ModerateBS2

The NM_017625.3(ITLN1):c.512C>T(p.Thr171Met) variant causes a missense change. The variant allele was found at a frequency of 0.000224 in 1,613,530 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00023 ( 2 hom. )

Consequence

ITLN1
NM_017625.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.94

Variant links:

Genes affected

ITLN1 (HGNC:18259): (intelectin 1) Enables calcium ion binding activity; identical protein binding activity; and oligosaccharide binding activity. Involved in positive regulation of glucose import; positive regulation of protein phosphorylation; and protein homotrimerization. Located in extracellular exosome. Part of receptor complex. [provided by Alliance of Genome Resources, Apr 2022]

ITLN1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.937

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ITLN1	NM_017625.3 link	c.512C>T	p.Thr171Met	missense_variant	Exon 5 of 8	ENST00000326245.4	NP_060095.2	Q8WWA0

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ITLN1	ENST00000326245.4 link	c.512C>T	p.Thr171Met	missense_variant	Exon 5 of 8	1	NM_017625.3	ENSP00000323587.3	Q8WWA0
ITLN1	ENST00000464077.1 link	n.446C>T		non_coding_transcript_exon_variant	Exon 2 of 2	2
ITLN1	ENST00000487531.1 link	n.316C>T		non_coding_transcript_exon_variant	Exon 1 of 3	5

Frequencies

GnomAD3 genomes

AF:

0.000158

AC:

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000235

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000120

AC:

AN:

250760

Hom.:

AF XY:

0.000118

AC XY:

AN XY:

135502

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 SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.000185

Gnomad NFE exome

AF:

0.000212

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.000231

AC:

338

AN:

1461344

Hom.:

Cov.:

AF XY:

0.000232

AC XY:

169

AN XY:

726966

show subpopulations

Gnomad4 AFR exome

AF:

0.0000897

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000227

Gnomad4 SAS exome

AF:

0.0000928

Gnomad4 FIN exome

AF:

0.0000374

Gnomad4 NFE exome

AF:

0.000269

Gnomad4 OTH exome

AF:

0.000232

GnomAD4 genome

AF:

0.000158

AC:

AN:

152186

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74330

show subpopulations

Gnomad4 AFR

AF:

0.000121

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.0000942

Gnomad4 NFE

AF:

0.000235

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000211

Hom.:

Bravo

AF:

0.000128

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0000824

AC:

EpiCase

AF:

0.000328

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 13, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.512C>T (p.T171M) alteration is located in exon 5 (coding exon 4) of the ITLN1 gene. This alteration results from a C to T substitution at nucleotide position 512, causing the threonine (T) at amino acid position 171 to be replaced by a methionine (M). 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

0.32

BayesDel_addAF

Benign

-0.069

BayesDel_noAF

Uncertain

-0.050

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.64

Eigen

Uncertain

0.54

Eigen_PC

Uncertain

0.35

FATHMM_MKL

Uncertain

0.87

LIST_S2

Uncertain

0.96

M_CAP

Benign

0.014

MetaRNN

Pathogenic

0.94

MetaSVM

Uncertain

-0.12

MutationAssessor

Pathogenic

3.6

PrimateAI

Benign

0.43

PROVEAN

Pathogenic

-5.8

REVEL

Uncertain

0.40

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.78

MVP

0.73

MPC

0.57

ClinPred

0.91

GERP RS

4.0

Varity_R

0.77

gMVP

0.79

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