NM_000372.5(TYR):c.1217C>T (p.Pro406Leu) AND Tyrosinase-negative oculocutaneous albinism

Germline classification:: Pathogenic/Likely pathogenic (10 submissions)
Last evaluated:: Mar 29, 2024
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:: RCV000500113.20

Allele description [Variation Report for NM_000372.5(TYR):c.1217C>T (p.Pro406Leu)]

NM_000372.5(TYR):c.1217C>T (p.Pro406Leu)

Gene:

TYR:tyrosinase [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

11q14.3

Genomic location:

Preferred name:

NM_000372.5(TYR):c.1217C>T (p.Pro406Leu)

HGVS:

NC_000011.10:g.89284805C>T
NG_008748.1:g.111934C>T
NM_000372.5:c.1217C>TMANE SELECT
NP_000363.1:p.Pro406Leu
NC_000011.9:g.89017973C>T
NM_000372.4:c.1217C>T
P14679:p.Pro406Leu

Protein change:

P406L; PRO406LEU

Links:

UniProtKB: P14679#VAR_007689; OMIM: 606933.0006; dbSNP: rs104894313

NCBI 1000 Genomes Browser:

rs104894313

Molecular consequence:

NM_000372.5:c.1217C>T - missense variant - [Sequence Ontology: SO:0001583]

Functional consequence:

Unknown function

Observations:

Condition(s)

Name:: Tyrosinase-negative oculocutaneous albinism (OCA1A)
Synonyms:: Oculocutaneous albinism type 1A; Albinism, oculocutaneous, type IA
Identifiers:: MONDO: MONDO:0008745; MedGen: C4551504; Orphanet: 352731; Orphanet: 79431; OMIM: 203100

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000597799	Genetic Services Laboratory, University of Chicago	criteria provided, single submitter (ACMG Guidelines, 2015)	Likely pathogenic (May 24, 2017)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV000897703	Foundation for Research in Genetics and Endocrinology, FRIGE's Institute of Human Genetics	criteria provided, single submitter (ACMG Guidelines, 2015)	Pathogenic (Feb 27, 2019)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV001138405	Mendelics	criteria provided, single submitter (Mendelics Assertion Criteria 2017)	Pathogenic (May 28, 2019)	unknown	clinical testing	Citation Link,
SCV001142424	Reproductive Health Research and Development, BGI Genomics	no assertion criteria provided	Pathogenic (Jan 6, 2020)	germline	curation
SCV001251449	UNC Molecular Genetics Laboratory, University of North Carolina at Chapel Hill - NSIGHT-NC NEXUS	criteria provided, single submitter (ACMG Guidelines, 2015)	Likely pathogenic	germline	research	PubMed (2) [See all records that cite these PMIDs] 1903591, 25741868
SCV001368755	Centre for Mendelian Genomics, University Medical Centre Ljubljana	criteria provided, single submitter (ACMG Guidelines, 2015)	Likely pathogenic (Jan 1, 2016)	unknown	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV001821911	Genome-Nilou Lab	criteria provided, single submitter (ACMG Guidelines, 2015)	Pathogenic (Jul 22, 2021)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV002579802	MGZ Medical Genetics Center	criteria provided, single submitter (ACMG Guidelines, 2015)	Pathogenic (Feb 24, 2022)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV003841208	Baylor Genetics	criteria provided, single submitter (ACMG Guidelines, 2015)	Likely pathogenic	unknown	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV004807577	Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center	criteria provided, single submitter (ACMG Guidelines, 2015)	Pathogenic (Mar 29, 2024)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

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Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	yes	3	not provided	not provided	not provided	not provided	clinical testing
not provided	germline	no	1	not provided	not provided	not provided	not provided	clinical testing, research
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing, curation
not provided	unknown	yes	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
Indian Hindu	germline	yes	1	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Tyrosinase gene mutations associated with type IB ("yellow") oculocutaneous albinism.

Giebel LB, Tripathi RK, Strunk KM, Hanifin JM, Jackson CE, King RA, Spritz RA.

Am J Hum Genet. 1991 Jun;48(6):1159-67. Erratum in: Am J Hum Genet 1991 Sep;49(3):696.

PubMed [citation]

PMID:: 1903591
PMCID:: PMC1683101

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 Genetic Services Laboratory, University of Chicago, SCV000597799.1

#	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 Foundation for Research in Genetics and Endocrinology, FRIGE's Institute of Human Genetics, SCV000897703.1

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

Description

The observed variant NM_000372.4 :c.1217C>T (p.Pro406Leu) is a missense variation found in exon 4 of the TYR gene. It is a known pathogenic variant and has been reported in the ExAC and gnomAD database with an allele frequency of 0.003489 and 0.003845, respectively. The in silico prediction of this variant is disease causing by MutationTaster2. The proband's parents are heterozygous carriers of the following mutations in the TYR gene: c.1147G>A (p.Asp383Asn) in exon 3 and c.1217C>T (p.pro406leu) in exon 4. As the parents are phenotypically normal, it is likely that these mutations are in a cis arrangement. The proband thus has both of the parent's mutations in trans with a third variant c.1110G>A, which is de novo. In summary, the variant meets the ACMG criteria to be classified as pathogenic based upon the evidence stated above.

#	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		1	not provided	not provided	not provided

From Mendelics, SCV001138405.1

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

From Reproductive Health Research and Development, BGI Genomics, SCV001142424.1

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

Description

NM_000372.4:c.1217C>T in the TYR gene has an allele frequency of 0.011 in European (Finnish) subpopulation in the gnomAD database. The p.Pro406Leu (NM_000372.4 c.1217C>T) variant in TYR has been reported in at least 5 homozygous and 7 compound heterozygous individuals with clinical features of Oculocutaneous albinism type 1 (OCA type 1) (PMID: 18463683; 19320745; 19865097; 20861488; 25216246). In vitro function al studies provide evidence that the p.Pro406Leu variant may impact protein func tion (PMID: 1642278; 9242509; 11284711).Taken together, we interprete this variant as Pathogenic/Likely pathogenic. ACMG/AMP Criteria applied: PM3_Strong; PS3; PP4.

#	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 UNC Molecular Genetics Laboratory, University of North Carolina at Chapel Hill - NSIGHT-NC NEXUS, SCV001251449.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	1	not provided	not provided	research	PubMed (2)

Description

The TYR (p.Pro406Leu) variant segregated in a family with type IB oculocutaneous albinism (PMID: 1903591).

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	no	not provided	not provided	not provided		1	not provided	not provided	not provided

From Centre for Mendelian Genomics, University Medical Centre Ljubljana, SCV001368755.2

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

Description

This variant was classified as: Likely pathogenic. The following ACMG criteria were applied in classifying this variant: PS3,PM1,PP2,PP3. This variant was detected in homozygous state.

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

From Genome-Nilou Lab, SCV001821911.1

#	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	no	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From MGZ Medical Genetics Center, SCV002579802.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	3	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		3	not provided	not provided	not provided

From Baylor Genetics, SCV003841208.1

#	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

From Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, SCV004807577.1

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

Last Updated: May 26, 2024

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