chr11-7509757-T-A

Position:

• chr11-7509757-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_198474.4(OLFML1):​c.778T>A​(p.Leu260Met) variant causes a missense 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. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: OLFML1 NM_198474.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.55

Genes affected

OLFML1 (HGNC:24473): (olfactomedin like 1) Predicted to be located in extracellular region. [provided by Alliance of Genome Resources, Apr 2022]

LOC124902806 (HGNC:):

SYT9-AS1 (HGNC:56173): (SYT9 antisense RNA 1)

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.25026882).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OLFML1	NM_198474.4	c.778T>A	p.Leu260Met	missense_variant	3/3	ENST00000329293.4	NP_940876.2
LOC124902806	XM_047428005.1	c.*1088-1574A>T		intron_variant			XP_047283961.1
OLFML1	NM_001370498.1	c.778T>A	p.Leu260Met	missense_variant	4/4		NP_001357427.1
OLFML1	NM_001370499.1	c.370T>A	p.Leu124Met	missense_variant	3/3		NP_001357428.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
OLFML1	ENST00000329293.4	c.778T>A	p.Leu260Met	missense_variant	3/3	1	NM_198474.4	ENSP00000332511	P1
SYT9-AS1	ENST00000530201.2	n.1350+2366A>T		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 09, 2024

The c.778T>A (p.L260M) alteration is located in exon 3 (coding exon 3) of the OLFML1 gene. This alteration results from a T to A substitution at nucleotide position 778, causing the leucine (L) at amino acid position 260 to be replaced by a methionine (M). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.088
BayesDel_addAF	Benign	-0.018	T
BayesDel_noAF	Benign	-0.26
CADD	Benign	15
DANN	Uncertain	0.98
DEOGEN2	Benign	0.20	T;T
Eigen	Benign	-0.62
Eigen_PC	Benign	-0.73
FATHMM_MKL	Benign	0.17	N
LIST_S2	Benign	0.61	.;T
M_CAP	Benign	0.039	D
MetaRNN	Benign	0.25	T;T
MetaSVM	Uncertain	-0.14	T
MutationAssessor	Benign	1.6	L;L
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.29	T
PROVEAN	Benign	0.24	N;N
REVEL	Benign	0.26
Sift	Benign	0.18	T;T
Sift4G	Benign	0.24	T;T
Polyphen		0.96	D;D
Vest4		0.18
MutPred		0.54		Loss of phosphorylation at Y262 (P = 0.1041);Loss of phosphorylation at Y262 (P = 0.1041);
MVP		0.32
MPC		0.12
ClinPred		0.78	D
GERP RS		2.3
Varity_R		0.083
gMVP		0.32

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr11-7530988;