18-5969508-G-A

Variant names:

• chr18-5969508-G-A
• rs373941763
• NM_001330559.2:c.1499C>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001330559.2(L3MBTL4):​c.1499C>T​(p.Thr500Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000143 in 1,613,650 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000033 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000012 (0 hom.)
• Consequence: L3MBTL4 NM_001330559.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.36
• Publications: 3 publications found

Genes affected

L3MBTL4 (HGNC:26677): (L3MBTL histone methyl-lysine binding protein 4) Predicted to enable chromatin binding activity and histone binding activity. Predicted to be involved in negative regulation of transcription, DNA-templated. Predicted to be active in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

ENSG00000266846 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.09123966).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
L3MBTL4	NM_001330559.2	c.1499C>T	p.Thr500Met	missense_variant	Exon 17 of 19	ENST00000317931.12	NP_001317488.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
L3MBTL4	ENST00000317931.12	c.1499C>T	p.Thr500Met	missense_variant	Exon 17 of 19	5	NM_001330559.2	ENSP00000318543.7

Frequencies

GnomAD3 genomes AF: 0.0000329 AC: 5 AN: 152186 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000654

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000281 AC: 7 AN: 248844 AF XY: 0.0000148

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000871

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000556

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000266

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000123 AC: 18 AN: 1461464 Hom.: 0 Cov.: 31 AF XY: 0.0000124 AC XY: 9 AN XY: 726984

African (AFR) AF: 0.0000299 AC: 1 AN: 33478

American (AMR) AF: 0.0000672 AC: 3 AN: 44676

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26114

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39696

South Asian (SAS) AF: 0.00 AC: 0 AN: 86138

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53382

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5750

European-Non Finnish (NFE) AF: 0.00000899 AC: 10 AN: 1111856

Other (OTH) AF: 0.0000497 AC: 3 AN: 60374

GnomAD4 genome AF: 0.0000329 AC: 5 AN: 152186 Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1 AN XY: 74340

African (AFR) AF: 0.0000483 AC: 2 AN: 41444

American (AMR) AF: 0.0000654 AC: 1 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5172

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68038

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000151

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000118 AC: 1

ExAC AF: 0.0000330 AC: 4

EpiCase AF: 0.0000545

EpiControl AF: 0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jul 14, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1526C>T (p.T509M) alteration is located in exon 18 (coding exon 16) of the L3MBTL4 gene. This alteration results from a C to T substitution at nucleotide position 1526, causing the threonine (T) at amino acid position 509 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	0.079
BayesDel_addAF	Benign	-0.49	T
BayesDel_noAF	Benign	-0.75
CADD	Benign	20
DANN	Benign	0.85
DEOGEN2	Benign	0.016	T;T
Eigen	Benign	-0.48
Eigen_PC	Benign	-0.44
FATHMM_MKL	Benign	0.60	D
LIST_S2	Uncertain	0.92	D;D
M_CAP	Benign	0.0083	T
MetaRNN	Benign	0.091	T;T
MetaSVM	Benign	-1.0	T
PhyloP100		4.4
PrimateAI	Benign	0.29	T
PROVEAN	Benign	-0.45	N;N
REVEL	Benign	0.067
Sift	Benign	0.22	T;T
Sift4G	Uncertain	0.058	T;T
Polyphen		0.66	P;B
Vest4		0.23
MVP		0.32
ClinPred		0.62	D
GERP RS		3.7
Varity_R		0.029
gMVP		0.25
Mutation Taster		=86/14	polymorphism

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: rs373941763; hg19: chr18-5969507; COSMIC: COSV53124373;