Variant 16-25169163-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_016309.3(LCMT1):c.742C>A(p.Arg248Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,238 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

LCMT1
NM_016309.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.34

Variant links:

Genes affected

LCMT1 (HGNC:17557): (leucine carboxyl methyltransferase 1) LCMT1 catalyzes the methylation of the carboxyl group of the C-terminal leucine residue (leu309) of the catalytic subunit of protein phosphatase-2A (PPP2CA; MIM 176915) (De Baere et al., 1999 [PubMed 10600115]).[supplied by OMIM, Mar 2008]

LCMT1 links:

LCMT1 (HGNC:):

LCMT1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.945

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LCMT1	NM_016309.3 linkuse as main transcript	c.742C>A	p.Arg248Ser	missense_variant	8/11	ENST00000399069.8	NP_057393.2	Q9UIC8-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
LCMT1	ENST00000399069.8 linkuse as main transcript	c.742C>A	p.Arg248Ser	missense_variant	8/11	1	NM_016309.3	ENSP00000382021.3	Q9UIC8-1
LCMT1	ENST00000380962.9 linkuse as main transcript	n.*599C>A		non_coding_transcript_exon_variant	9/12	2		ENSP00000370349.5	H7BYF0
LCMT1	ENST00000380962.9 linkuse as main transcript	n.*599C>A		3_prime_UTR_variant	9/12	2		ENSP00000370349.5	H7BYF0

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000401

AC:

AN:

249156

Hom.:

AF XY:

0.00000740

AC XY:

AN XY:

135164

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

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:

0.00000205

AC:

AN:

1461238

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726906

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

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

Mar 13, 2023

The c.742C>A (p.R248S) alteration is located in exon 8 (coding exon 8) of the LCMT1 gene. This alteration results from a C to A substitution at nucleotide position 742, causing the arginine (R) at amino acid position 248 to be replaced by a serine (S). 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

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.18

BayesDel_noAF

Uncertain

0.10

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.69

D;.

Eigen

Pathogenic

0.71

Eigen_PC

Uncertain

0.61

FATHMM_MKL

Benign

0.67

LIST_S2

Pathogenic

0.98

D;D

M_CAP

Uncertain

0.092

MetaRNN

Pathogenic

0.94

D;D

MetaSVM

Benign

-0.74

MutationAssessor

Pathogenic

4.0

H;.

PrimateAI

Uncertain

0.53

PROVEAN

Pathogenic

-5.6

D;D

REVEL

Uncertain

0.33

Sift

Uncertain

0.0020

D;D

Sift4G

Uncertain

0.0020

D;D

Polyphen

1.0

D;D

Vest4

0.88

MutPred

0.79

Loss of catalytic residue at R248 (P = 0.0427);.;

MVP

0.45

MPC

0.92

ClinPred

0.95

GERP RS

3.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.90

gMVP

0.84

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

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