NM_001134363.3(RBM20):c.3265C>G (p.Pro1089Ala) AND not specified

Germline classification:: Conflicting interpretations of pathogenicity (7 submissions)
Last evaluated:: Apr 26, 2021
Review status:: criteria provided, conflicting classifications

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:: RCV000036981.17

Allele description [Variation Report for NM_001134363.3(RBM20):c.3265C>G (p.Pro1089Ala)]

NM_001134363.3(RBM20):c.3265C>G (p.Pro1089Ala)

Gene:

RBM20:RNA binding motif protein 20 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

10q25.2

Genomic location:

Preferred name:

NM_001134363.3(RBM20):c.3265C>G (p.Pro1089Ala)

Other names:

p.P1089A:CCC>GCC

HGVS:

NC_000010.11:g.110821884C>G
NG_021177.1:g.182488C>G
NM_001134363.3:c.3265C>GMANE SELECT
NP_001127835.2:p.Pro1089Ala
LRG_382t1:c.3265C>G
LRG_382:g.182488C>G
LRG_382p1:p.Pro1089Ala
NC_000010.10:g.112581642C>G
NM_001134363.1:c.3265C>G
NM_001134363.2:c.3265C>G
NP_001127835.1:p.Pro1089Ala
c.3265C>G

Protein change:

P1089A

Links:

dbSNP: rs147356378

NCBI 1000 Genomes Browser:

rs147356378

Molecular consequence:

NM_001134363.3:c.3265C>G - missense variant - [Sequence Ontology: SO:0001583]

Observations:

Condition(s)

Synonyms:: AllHighlyPenetrant
Identifiers:: MedGen: CN169374

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000060637	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	criteria provided, single submitter (LMM Criteria)	Uncertain significance (May 1, 2012)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV000111390	Eurofins Ntd Llc (ga)	criteria provided, single submitter (EGL Classification Definitions 2015)	Benign (Aug 12, 2015)	germline	clinical testing	Citation Link,
SCV000236367	GeneDx	criteria provided, single submitter (GeneDx Variant Classification (06012015))	Benign (Oct 14, 2016)	germline	clinical testing	Citation Link,
SCV001433492	Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute	criteria provided, single submitter (ACMG Guidelines, 2015)	Likely benign (Dec 4, 2019)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV001623205	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	criteria provided, single submitter (LabCorp Variant Classification Summary - May 2015)	Benign (Apr 26, 2021)	germline	clinical testing	Citation Link,
SCV001918922	Clinical Genetics, Academic Medical Center - VKGL Data-share Consensus See additional submitters Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	no assertion criteria provided	Benign	germline	clinical testing
SCV001932369	Genome Diagnostics Laboratory, University Medical Center Utrecht - VKGL Data-share Consensus See additional submitters Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	no assertion criteria provided	Benign	germline	clinical testing

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	yes	not provided	not provided	not provided	not provided	not provided	clinical testing
not provided	germline	unknown	1	not provided	not provided	not provided	not provided	clinical testing
not provided	germline	not provided	1	1	not provided	not provided	not provided	clinical testing

Citations

PubMed

A systematic approach to assessing the clinical significance of genetic variants.

Duzkale H, Shen J, McLaughlin H, Alfares A, Kelly MA, Pugh TJ, Funke BH, Rehm HL, Lebo MS.

Clin Genet. 2013 Nov;84(5):453-63. doi: 10.1111/cge.12257.

PubMed [citation]

PMID:: 24033266
PMCID:: PMC3995020

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 Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine, SCV000060637.6

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

Description

Variant classified as Uncertain Significance - Favor Benign. The Pro1089Ala vari ant (RBM20) has not been reported in the literature nor previously identified by our laboratory. Proline (Pro) at position 1089 is not well conserved in evolut ion, suggesting that a change may be tolerated. Other computational analyses (bi ochemical amino acid properties, conservation, AlignGVGD, PolyPhen2, and SIFT) a lso suggest that this variant may not impact the protein, though this informatio n is not predictive enough to rule out pathogenicity. Of note, the variant has b een identified in the NHLBI Exome Sequencing Project (http://evs.gs.washington.e du/EVS). However, the data did not pass quality metrics and was therefore not i ncluded in the assessment of the variant. In summary, although this data support s that the Pro1089Ala variant may be benign, additional studies are needed to fu lly assess its clinical significance.

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

From Eurofins Ntd Llc (ga), SCV000111390.8

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

#	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		1	not provided	not provided	not provided

From GeneDx, SCV000236367.6

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

Description

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease.

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

From Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute, SCV001433492.1

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

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

From Women's Health and Genetics/Laboratory Corporation of America, LabCorp, SCV001623205.1

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

Description

Variant summary: RBM20 c.3265C>G (p.Pro1089Ala) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00045 in 156498 control chromosomes, predominantly at a frequency of 0.0077 within the African or African-American subpopulation in the gnomAD database. The observed variant frequency within African or African-American control individuals in the gnomAD database is approximately 164 fold of the estimated maximal expected allele frequency for a pathogenic variant in RBM20 causing Dilated Cardiomyopathy phenotype (4.7e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of African or African-American origin. Seven clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation (benign/likely benign n=6, VUS n=1). Based on the evidence outlined above, the variant was classified as benign.

#	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 Clinical Genetics, Academic Medical Center - VKGL Data-share Consensus, SCV001918922.1

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

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

From Genome Diagnostics Laboratory, University Medical Center Utrecht - VKGL Data-share Consensus, SCV001932369.1

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

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

Last Updated: Sep 29, 2024

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