Variant 6-130055254-G-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_032438.4(L3MBTL3):c.666G>T(p.Gln222His) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000686 in 1,456,892 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

L3MBTL3
NM_032438.4 missense, splice_region

Scores

Splicing: ADA: 0.0003387

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.797

Variant links:

Genes affected

L3MBTL3 (HGNC:23035): (L3MBTL histone methyl-lysine binding protein 3) This gene encodes a member of the malignant brain tumor (MBT) family of chromatin interacting transcriptional repressors. Members of this family function as methyl-lysine readers, which recognize methylated lysine residues on histone protein tails, and are associated with the repression of gene expression. The encoded protein may regulate hematopoiesis. Homozygous deletion of this gene has been observed in human patients with medulloblastoma. [provided by RefSeq, Oct 2016]

L3MBTL3 links:

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ACMG classification

Classification made for transcript

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=0.109894186).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
L3MBTL3	NM_032438.4 linkuse as main transcript	c.666G>T	p.Gln222His	missense_variant, splice_region_variant	8/23	ENST00000361794.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
L3MBTL3	ENST00000361794.7 linkuse as main transcript	c.666G>T	p.Gln222His	missense_variant, splice_region_variant	8/23	5	NM_032438.4	A1	Q96JM7-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000403

AC:

AN:

248024

Hom.:

AF XY:

0.00000746

AC XY:

AN XY:

134008

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000550

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.86e-7

AC:

AN:

1456892

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

724828

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 02, 2021

The c.666G>T (p.Q222H) alteration is located in exon 8 (coding exon 6) of the L3MBTL3 gene. This alteration results from a G to T substitution at nucleotide position 666, causing the glutamine (Q) at amino acid position 222 to be replaced by a histidine (H). 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

0.12

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.50

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.15

T;T;.;.;.;T

Eigen

Benign

-0.17

Eigen_PC

Benign

-0.13

FATHMM_MKL

Benign

0.68

M_CAP

Benign

0.016

MetaRNN

Benign

0.11

T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.0

M;M;.;.;.;M

MutationTaster

Benign

0.61

N;N;N;N;N;N

PrimateAI

Uncertain

0.64

PROVEAN

Benign

-1.1

N;N;N;N;N;N

REVEL

Benign

0.032

Sift

Benign

0.52

T;T;T;T;T;T

Sift4G

Benign

0.40

T;T;T;T;T;T

Polyphen

0.036

B;B;D;D;D;B

Vest4

0.38

MutPred

0.33

Loss of ubiquitination at K221 (P = 0.1016);Loss of ubiquitination at K221 (P = 0.1016);.;.;.;Loss of ubiquitination at K221 (P = 0.1016);

MVP

0.63

MPC

0.40

ClinPred

0.36

GERP RS

1.5

Varity_R

0.035

gMVP

0.34

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00034

dbscSNV1_RF

Benign

0.0040

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over