chr15-77615433-T-A

Variant names:

• chr15-77615433-T-A
• rs2271397
• NM_032808.7:c.474A>T

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_032808.7(LINGO1):​c.474A>T​(p.Leu158Leu) 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. Synonymous variant affecting the same amino acid position (i.e. L158L) has been classified as Benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: LINGO1 NM_032808.7 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.641
• Publications: 28 publications found

Genes affected

LINGO1 (HGNC:21205): (leucine rich repeat and Ig domain containing 1) Predicted to enable epidermal growth factor receptor binding activity. Predicted to act upstream of or within generation of neurons and protein kinase B signaling. Predicted to be located in plasma membrane. Predicted to be active in extracellular matrix and extracellular space. Implicated in autosomal recessive non-syndromic intellectual disability and glaucoma. [provided by Alliance of Genome Resources, Apr 2022]

LINGO1 Gene-Disease associations (from GenCC):

• intellectual disability, autosomal recessive 64

  Inheritance: Unknown, AR Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

LOC105370906 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.43).
• BP7: Synonymous conserved (PhyloP=0.641 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LINGO1	NM_032808.7	c.474A>T	p.Leu158Leu	synonymous_variant	Exon 2 of 2	ENST00000355300.7	NP_116197.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LINGO1	ENST00000355300.7	c.474A>T	p.Leu158Leu	synonymous_variant	Exon 2 of 2	1	NM_032808.7	ENSP00000347451.6

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 63

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 127052

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.43
CADD	Benign	9.5
DANN	Benign	0.72
PhyloP100		0.64

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs2271397; hg19: chr15-77907775;