NM_000528.4(MAN2B1):c.2020C>T (p.Arg674Cys) AND Deficiency of alpha-mannosidase

Germline classification:: Conflicting interpretations of pathogenicity (2 submissions)
Last evaluated:: Jan 24, 2024
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:: RCV001899995.5

Allele description [Variation Report for NM_000528.4(MAN2B1):c.2020C>T (p.Arg674Cys)]

NM_000528.4(MAN2B1):c.2020C>T (p.Arg674Cys)

Gene:

MAN2B1:mannosidase alpha class 2B member 1 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

19p13.13

Genomic location:

Preferred name:

NM_000528.4(MAN2B1):c.2020C>T (p.Arg674Cys)

HGVS:

NC_000019.10:g.12652179G>A
NG_008318.1:g.19599C>T
NM_000528.4:c.2020C>TMANE SELECT
NM_001173498.2:c.2017C>T
NP_000519.2:p.Arg674Cys
NP_001166969.1:p.Arg673Cys
NC_000019.9:g.12762993G>A

Protein change:

R673C

Links:

dbSNP: rs770791374

NCBI 1000 Genomes Browser:

rs770791374

Molecular consequence:

NM_000528.4:c.2020C>T - missense variant - [Sequence Ontology: SO:0001583]
NM_001173498.2:c.2017C>T - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Deficiency of alpha-mannosidase (MANSA)
Synonyms:: Lysosomal alpha-D-mannosidase deficiency; Alpha mannosidase B deficiency; Mannosidosis, alpha B lysosomal; See all synonyms [MedGen]
Identifiers:: MONDO: MONDO:0009561; MedGen: C0024748; Orphanet: 61; OMIM: 248500

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV002123908	Invitae	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Likely benign (Jan 24, 2024)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV002777997	Fulgent Genetics, Fulgent Genetics	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (Sep 24, 2021)	unknown	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

SCV002123908

Invitae

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Likely benign
(Jan 24, 2024)

germline

clinical testing

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

SCV002777997

Fulgent Genetics, Fulgent Genetics

criteria provided, single submitter

(ACMG Guidelines, 2015)

Uncertain significance
(Sep 24, 2021)

unknown

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
not provided	unknown	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):240-242.

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 Invitae, SCV002123908.3

#	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	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Fulgent Genetics, Fulgent Genetics, SCV002777997.1

#	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	unknown	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Feb 20, 2024

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