15-74195418-G-A

Variant names:

• chr15-74195418-G-A
• NM_022369.4:c.481C>T
• STRA6 p.Leu161Leu

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_022369.4(STRA6):​c.481C>T​(p.Leu161Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: STRA6 NM_022369.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.24
• Publications: 0 publications found

Genes affected

STRA6 (HGNC:30650): (signaling receptor and transporter of retinol STRA6) The protein encoded by this gene is a membrane protein involved in the metabolism of retinol. The encoded protein acts as a receptor for retinol/retinol binding protein complexes. This protein removes the retinol from the complex and transports it across the cell membrane. Defects in this gene are a cause of syndromic microphthalmia type 9 (MCOPS9). Several transcript variants encoding a few different isoforms have been found for this gene. [provided by RefSeq, Dec 2008]

STRA6 Gene-Disease associations (from GenCC):

• Matthew-Wood syndrome

  Inheritance: AD, AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), PanelApp Australia, G2P
• microphthalmia, isolated, with coloboma

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.59).
• BP7: Synonymous conserved (PhyloP=2.24 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_022369.4. 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
	STRA6	NM_022369.4	MANE Select	c.481C>T	p.Leu161Leu	synonymous	Exon 7 of 19	NP_071764.3
	STRA6	NM_001199042.2		c.598C>T	p.Leu200Leu	synonymous	Exon 7 of 19	NP_001185971.1	Q9BX79-4
	STRA6	NM_001199040.2		c.592C>T	p.Leu198Leu	synonymous	Exon 7 of 19	NP_001185969.1	Q9BX79-5

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	STRA6	ENST00000395105.9	TSL:1 MANE Select	c.481C>T	p.Leu161Leu	synonymous	Exon 7 of 19	ENSP00000378537.4	Q9BX79-1
	STRA6	ENST00000563965.5	TSL:1	c.598C>T	p.Leu200Leu	synonymous	Exon 7 of 19	ENSP00000456609.1	Q9BX79-4
	STRA6	ENST00000423167.6	TSL:1	c.454C>T	p.Leu152Leu	synonymous	Exon 7 of 19	ENSP00000413012.2	Q9BX79-3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.59
CADD	Benign	8.7
DANN	Benign	0.59
PhyloP100		2.2

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr15-74487759;