2-169812455-A-C

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PVS1_ModeratePM2PP5_Moderate

The NM_014168.4(METTL5):​c.591+2T>G variant causes a splice donor, intron change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,782 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

METTL5
NM_014168.4 splice_donor, intron

Scores

5
1
2
Splicing: ADA: 1.000
2

Clinical Significance

Pathogenic criteria provided, single submitter P:1

Conservation

PhyloP100: 8.69
Variant links:
Genes affected
METTL5 (HGNC:25006): (methyltransferase 5, N6-adenosine) Enables S-adenosyl-L-methionine binding activity and rRNA (adenine-N6-)-methyltransferase activity. Involved in positive regulation of translation and rRNA methylation. Located in nucleus; postsynapse; and presynapse. Implicated in autosomal recessive intellectual developmental disorder-72. [provided by Alliance of Genome Resources, Apr 2022]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PVS1
Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.07777778 fraction of the gene. Cryptic splice site detected, with MaxEntScore 3.8, offset of 33, new splice context is: tcgGTattg. Cryptic site results in inframe change. If cryptic site found is not functional and variant results in exon loss, it results in frameshift change.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 2-169812455-A-C is Pathogenic according to our data. Variant chr2-169812455-A-C is described in ClinVar as [Pathogenic]. Clinvar id is 1685946.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
METTL5NM_014168.4 linkuse as main transcriptc.591+2T>G splice_donor_variant, intron_variant ENST00000260953.10 NP_054887.2 Q9NRN9

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
METTL5ENST00000260953.10 linkuse as main transcriptc.591+2T>G splice_donor_variant, intron_variant 1 NM_014168.4 ENSP00000260953.5 Q9NRN9

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.00000398
AC:
1
AN:
251354
Hom.:
0
AF XY:
0.00000736
AC XY:
1
AN XY:
135850
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:
6.84e-7
AC:
1
AN:
1461782
Hom.:
0
Cov.:
31
AF XY:
0.00000138
AC XY:
1
AN XY:
727192
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:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Intellectual developmental disorder, autosomal recessive 72 Pathogenic:1
Pathogenic, criteria provided, single submitterclinical testingMendelicsMay 04, 2022- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.37
D
BayesDel_noAF
Pathogenic
0.45
CADD
Pathogenic
33
DANN
Uncertain
0.99
Eigen
Pathogenic
0.99
Eigen_PC
Pathogenic
0.88
FATHMM_MKL
Pathogenic
1.0
D
M_CAP
Benign
0.066
D
ClinPred
0.95
D
GERP RS
5.5

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
1.0
dbscSNV1_RF
Pathogenic
0.93
SpliceAI score (max)
0.94
Details are displayed if max score is > 0.2
DS_DL_spliceai
0.94
Position offset: 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.

Other links and lift over

dbSNP: rs1400976065; hg19: chr2-170668965; API