NM_001378454.1(ALMS1):c.8242G>C (p.Gly2748Arg) AND Alstrom syndrome

Germline classification:: Uncertain significance (2 submissions)
Last evaluated:: Mar 13, 2022
Review status:: 2 stars out of maximum of 4 stars
criteria provided, multiple submitters, no conflicts

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV003089414.4

Allele description [Variation Report for NM_001378454.1(ALMS1):c.8242G>C (p.Gly2748Arg)]

NM_001378454.1(ALMS1):c.8242G>C (p.Gly2748Arg)

Gene:

ALMS1:ALMS1 centrosome and basal body associated protein [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

2p13.1

Genomic location:

Preferred name:

NM_001378454.1(ALMS1):c.8242G>C (p.Gly2748Arg)

HGVS:

NC_000002.12:g.73490201G>C
NG_011690.1:g.109449G>C
NM_001378454.1:c.8242G>CMANE SELECT
NM_015120.4:c.8245G>C
NP_001365383.1:p.Gly2748Arg
NP_055935.3:p.Gly2749Arg
NP_055935.4:p.Gly2749Arg
LRG_741t1:c.8245G>C
LRG_741:g.109449G>C
LRG_741p1:p.Gly2749Arg
NC_000002.11:g.73717328G>C
NM_015120.3:c.8245G>C

Protein change:

G2748R

Molecular consequence:

NM_001378454.1:c.8242G>C - missense variant - [Sequence Ontology: SO:0001583]
NM_015120.4:c.8245G>C - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Alstrom syndrome (ALMS)
Synonyms:: Alstrom's syndrome
Identifiers:: MONDO: MONDO:0008763; MedGen: C0268425; Orphanet: 64; OMIM: 203800

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV003475292	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Mar 13, 2022)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV003919982	Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (Mar 30, 2021)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV003475292

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Mar 13, 2022)

germline

clinical testing

PubMed (1)
[See all records that cite this PMID]

SCV003919982

Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago

criteria provided, single submitter

(ACMG Guidelines, 2015)

Uncertain significance
(Mar 30, 2021)

germline

clinical testing

PubMed (1)
[See all records that cite this PMID]

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.

Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL; ACMG Laboratory Quality Assurance Committee..

Genet Med. 2015 May;17(5):405-24. doi: 10.1038/gim.2015.30. Epub 2015 Mar 5.

PubMed [citation]

PMID:: 25741868
PMCID:: PMC4544753

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV003475292.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

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. This variant has not been reported in the literature in individuals affected with ALMS1-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 2749 of the ALMS1 protein (p.Gly2749Arg).

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago, SCV003919982.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

ALMS1 NM_015120.4 exon 10 p.Gly2747Arg (c.8239G>C): This variant has not been reported in the literature and is not present in large control databases. Evolutionary conservation and computational predictive tools suggest that this variant may impact the protein. In summary, data on this variant is insufficient for disease classification. Therefore, the clinical significance of this variant is uncertain.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Sep 29, 2024

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