7-93131254-A-G

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_ModerateBS1_SupportingBS2

The NM_152703.5(SAMD9L):c.4718T>C(p.Ile1573Thr) variant causes a missense change. The variant allele was found at a frequency of 0.000041 in 1,585,940 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 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. I1573N) has been classified as Likely benign.

Frequency

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

Exomes 𝑓: 0.000043 ( 0 hom. )

Consequence

SAMD9L
NM_152703.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 5.95

Variant links:

Genes affected

SAMD9L (HGNC:1349): (sterile alpha motif domain containing 9 like) This gene encodes a cytoplasmic protein that acts as a tumor suppressor but also plays a key role in cell proliferation and the innate immune response to viral infection. The encoded protein contains an N-terminal sterile alpha motif domain. Naturally occurring mutations in this gene are associated with myeloid disorders such as juvenile myelomonocytic leukemia, acute myeloid leukemia, and myelodysplastic syndrome. Naturally occurring mutations are also associated with hepatitis-B related hepatocellular carcinoma, normophosphatemic familial tumoral calcinosis, and ataxia-pancytopenia syndrome. [provided by RefSeq, Apr 2017]

SAMD9L links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.19672051).

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.0000197 (3/152170) while in subpopulation EAS AF= 0.000385 (2/5196). AF 95% confidence interval is 0.0000681. There are 0 homozygotes in gnomad4. There are 0 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAdExome at 7 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SAMD9L	NM_152703.5 linkuse as main transcript	c.4718T>C	p.Ile1573Thr	missense_variant	5/5	ENST00000318238.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SAMD9L	ENST00000318238.9 linkuse as main transcript	c.4718T>C	p.Ile1573Thr	missense_variant	5/5	1	NM_152703.5	P1	Q8IVG5-1

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:

0.000385

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000310

AC:

AN:

225658

Hom.:

AF XY:

0.0000410

AC XY:

AN XY:

121908

show subpopulations

Gnomad AFR exome

AF:

0.0000629

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000116

Gnomad SAS exome

AF:

0.0000794

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000190

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000432

AC:

AN:

1433770

Hom.:

Cov.:

AF XY:

0.0000477

AC XY:

AN XY:

712200

show subpopulations

Gnomad4 AFR exome

AF:

0.0000312

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000253

Gnomad4 SAS exome

AF:

0.0000246

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000472

Gnomad4 OTH exome

AF:

0.0000508

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152170

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74340

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000385

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000422

Hom.:

Bravo

AF:

0.0000264

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Jan 07, 2021

DNA sequence analysis of the SAMD9L gene demonstrated a sequence change, c.4718T>C, in exon 5 that results in an amino acid change, p.Ile1573Thr. This sequence change does not appear to have been previously described in individuals with SAMD9L-related disorders and has been described in the gnomAD database in 7 individuals with an overall population frequency of 0.003% (dbSNP rs371764964). The p.Ile1573Thr change affects a moderately conserved amino acid residue located in a domain of the SAMD9L protein that is not known to be functional. In-silico pathogenicity prediction tools (SIFT, PolyPhen2, Align GVGD, REVEL) provide contradictory results for the p.Ile1573Thr substitution. Due to these contrasting evidences and the lack of functional studies, the clinical significance of the p.Ile1573Thr change remains unknown at this time. -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 14, 2022

The c.4718T>C (p.I1573T) alteration is located in exon 5 (coding exon 1) of the SAMD9L gene. This alteration results from a T to C substitution at nucleotide position 4718, causing the isoleucine (I) at amino acid position 1573 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Oct 13, 2023

This sequence change replaces isoleucine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 1573 of the SAMD9L protein (p.Ile1573Thr). This variant is present in population databases (rs371764964, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with SAMD9L-related conditions. ClinVar contains an entry for this variant (Variation ID: 1336548). 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 SAMD9L protein function. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.085

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.34

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Benign

0.023

T;T;T;.

Eigen

Uncertain

0.34

Eigen_PC

Uncertain

0.34

FATHMM_MKL

Pathogenic

0.98

M_CAP

Benign

0.0047

MetaRNN

Benign

0.20

T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.7

L;L;L;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Benign

0.37

PROVEAN

Benign

-1.4

N;N;N;.

REVEL

Benign

0.15

Sift

Benign

0.11

T;T;T;.

Sift4G

Benign

0.27

T;T;T;T

Polyphen

0.93

P;P;P;.

Vest4

0.25

MVP

0.57

MPC

0.31

ClinPred

0.092

GERP RS

4.6

Varity_R

0.14

gMVP

0.86

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