chr14-55140300-C-T

Variant names:

• chr14-55140300-C-T
• NM_002306.4:c.368C>T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_002306.4(LGALS3):​c.368C>T​(p.Pro123Leu) 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. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: LGALS3 NM_002306.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.76

Genes affected

LGALS3 (HGNC:6563): (galectin 3) This gene encodes a member of the galectin family of carbohydrate binding proteins. Members of this protein family have an affinity for beta-galactosides. The encoded protein is characterized by an N-terminal proline-rich tandem repeat domain and a single C-terminal carbohydrate recognition domain. This protein can self-associate through the N-terminal domain allowing it to bind to multivalent saccharide ligands. This protein localizes to the extracellular matrix, the cytoplasm and the nucleus. This protein plays a role in numerous cellular functions including apoptosis, innate immunity, cell adhesion and T-cell regulation. The protein exhibits antimicrobial activity against bacteria and fungi. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Oct 2014]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.3055365).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LGALS3	NM_002306.4	c.368C>T	p.Pro123Leu	missense_variant	Exon 4 of 6	ENST00000254301.14	NP_002297.2
LGALS3	NM_001357678.2	c.410C>T	p.Pro137Leu	missense_variant	Exon 5 of 7		NP_001344607.1
LGALS3	NR_003225.2	n.1412C>T		non_coding_transcript_exon_variant	Exon 2 of 4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LGALS3	ENST00000254301.14	c.368C>T	p.Pro123Leu	missense_variant	Exon 4 of 6	1	NM_002306.4	ENSP00000254301.9

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Sep 12, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.368C>T (p.P123L) alteration is located in exon 4 (coding exon 3) of the LGALS3 gene. This alteration results from a C to T substitution at nucleotide position 368, causing the proline (P) at amino acid position 123 to be replaced by a leucine (L). 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	0.20
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.43
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.24	T;T
Eigen	Benign	0.053
Eigen_PC	Benign	0.045
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.82	T;T
M_CAP	Benign	0.016	T
MetaRNN	Benign	0.31	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.8	L;.
PrimateAI	Benign	0.39	T
PROVEAN	Pathogenic	-6.2	D;D
REVEL	Benign	0.15
Sift	Uncertain	0.010	D;T
Sift4G	Benign	0.24	T;T
Polyphen		0.80	P;.
Vest4		0.33
MutPred		0.58		Loss of glycosylation at P123 (P = 0.0414);Loss of glycosylation at P123 (P = 0.0414);
MVP		0.085
MPC		0.35
ClinPred		0.98	D
GERP RS		3.9
Varity_R		0.55
gMVP		0.64

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: chr14-55607018;