9-12704544-GA-GAA

Variant names:

• chr9-12704544-G-GA
• rs387906560
• NM_000550.3:c.1103dupA

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1 PM2

The NM_000550.3(TYRP1):​c.1103dupA​(p.Tyr369ValfsTer2) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. K368K) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 31)
• Consequence: TYRP1 NM_000550.3 frameshift
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.340
• Publications: 2 publications found

Genes affected

TYRP1 (HGNC:12450): (tyrosinase related protein 1) This gene encodes a melanosomal enzyme that belongs to the tyrosinase family and plays an important role in the melanin biosynthetic pathway. Defects in this gene are the cause of rufous oculocutaneous albinism and oculocutaneous albinism type III. [provided by RefSeq, Mar 2009]

LURAP1L-AS1 (HGNC:49761): (LURAP1L antisense RNA 1)

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000550.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TYRP1	NM_000550.3	MANE Select	c.1103dupA	p.Tyr369ValfsTer2	frameshift	Exon 6 of 8	NP_000541.1	P17643
	LURAP1L-AS1	NR_125775.1		n.317-3919dupT		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TYRP1	ENST00000388918.10	TSL:1 MANE Select	c.1103dupA	p.Tyr369ValfsTer2	frameshift	Exon 6 of 8	ENSP00000373570.4	P17643
	TYRP1	ENST00000381136.2	TSL:2	c.233dupA	p.Tyr79ValfsTer2	frameshift	Exon 3 of 5	ENSP00000370528.2	E7EQI3
	TYRP1	ENST00000381142.3	TSL:2	n.340dupA		non_coding_transcript_exon	Exon 3 of 4

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 31

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.34

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

Other links and lift over

dbSNP: rs387906560; hg19: chr9-12704544;