2-73599464-A-T

Position:

chr2-73599464-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001378454.1(ALMS1):c.11611A>T(p.Asn3871Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000211 in 1,613,636 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 11/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain risk allele (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N3871I) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

ALMS1
NM_001378454.1 missense

Scores

Clinical Significance

Uncertain significance/Uncertain risk allele criteria provided, multiple submitters, no conflicts U:7O:1

Conservation

PhyloP100: 1.95

Variant links:

Genes affected

ALMS1 (HGNC:428): (ALMS1 centrosome and basal body associated protein) This gene encodes a protein containing a large tandem-repeat domain as well as additional low complexity regions. The encoded protein functions in microtubule organization, particularly in the formation and maintanance of cilia. Mutations in this gene cause Alstrom syndrome. There is a pseudogene for this gene located adjacent in the same region of chromosome 2. Alternative splice variants have been described but their full length nature has not been determined. [provided by RefSeq, Apr 2014]

ALMS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.07213783).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ALMS1	NM_001378454.1 linkuse as main transcript	c.11611A>T	p.Asn3871Tyr	missense_variant	17/23	ENST00000613296.6
ALMS1	NM_015120.4 linkuse as main transcript	c.11614A>T	p.Asn3872Tyr	missense_variant	17/23

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ALMS1	ENST00000613296.6 linkuse as main transcript	c.11611A>T	p.Asn3871Tyr	missense_variant	17/23	1	NM_001378454.1	P3	Q8TCU4-1

Frequencies

GnomAD3 genomes

AF:

0.000118

AC:

AN:

152184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000410

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000803

AC:

AN:

249036

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135100

show subpopulations

Gnomad AFR exome

AF:

0.000129

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000109

AC:

AN:

1461334

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

726994

show subpopulations

Gnomad4 AFR exome

AF:

0.000478

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.000118

AC:

AN:

152302

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74476

show subpopulations

Gnomad4 AFR

AF:

0.000409

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000214

Hom.:

Bravo

AF:

0.000147

ESP6500AA

AF:

0.000541

AC:

ESP6500EA

AF:

0.00

AC:

ClinVar

Significance: Uncertain significance/Uncertain risk allele

Submissions summary: Uncertain:7Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Alstrom syndrome

Uncertain:4Other:1

Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jul 30, 2022	This sequence change replaces asparagine, which is neutral and polar, with tyrosine, which is neutral and polar, at codon 3872 of the ALMS1 protein (p.Asn3872Tyr). This variant is present in population databases (rs368957150, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with ALMS1-related conditions. ClinVar contains an entry for this variant (Variation ID: 393380). 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. -
Uncertain significance, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Jan 11, 2022	- -
Uncertain significance, no assertion criteria provided	clinical testing	Natera, Inc.	Mar 04, 2020	- -
Uncertain risk allele, criteria provided, single submitter	research	Clinical Genomics, Uppaluri K&H Personalized Medicine Clinic	-	Potent mutations in ALMS1 are associated with a rare condition called Alstrom syndrome. It can cause excessive eating, insulin resistance. However, no evidence is found to ascertain the role of rs368957150 in Alstrom syndrome yet. -
Uncertain significance, criteria provided, single submitter	clinical testing	Counsyl	Nov 29, 2017	- -

Monogenic diabetes

Uncertain:1

Uncertain significance, criteria provided, single submitter

research

Personalized Diabetes Medicine Program, University of Maryland School of Medicine

Oct 27, 2015

ACMG Criteria: PP3, BP4 -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Apr 19, 2024

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Cardiovascular phenotype

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 23, 2023

The p.N3872Y variant (also known as c.11614A>T), located in coding exon 17 of the ALMS1 gene, results from an A to T substitution at nucleotide position 11614. The asparagine at codon 3872 is replaced by tyrosine, an amino acid with dissimilar properties. This amino acid position is poorly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.29

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.038

T;.

Eigen

Benign

-0.91

Eigen_PC

Benign

-0.96

FATHMM_MKL

Benign

0.087

LIST_S2

Benign

0.67

T;T

M_CAP

Benign

0.0035

MetaRNN

Benign

0.072

T;T

MetaSVM

Benign

-0.94

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.29

Sift4G

Uncertain

0.017

D;D

Vest4

0.27

MVP

0.14

ClinPred

0.22

GERP RS

-0.89

Varity_R

0.023

gMVP

0.12

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