Genetic Variant NM_015140.4:c.1651A>G (chr22-43168906-T-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

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

The NM_015140.4(TTLL12):c.1651A>G(p.Ile551Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000497 in 1,609,702 control chromosomes in the GnomAD database, with no homozygous occurrence. 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: 𝑓 0.000079 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000047 ( 0 hom. )

Consequence

TTLL12
NM_015140.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.08

Variant links:

Genes affected

TTLL12 (HGNC:28974): (tubulin tyrosine ligase like 12) Enables H4K20me3 modified histone binding activity and tubulin binding activity. Involved in negative regulation of type I interferon-mediated signaling pathway and regulation of mitotic cell cycle. Located in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

TTLL12 links:

Genome browser will be placed here

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=0.22179687).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TTLL12	NM_015140.4 link	c.1651A>G	p.Ile551Val	missense_variant	Exon 13 of 14	ENST00000216129.7	NP_055955.1	Q14166A0A024R4U3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TTLL12	ENST00000216129.7 link	c.1651A>G	p.Ile551Val	missense_variant	Exon 13 of 14	1	NM_015140.4	ENSP00000216129.6	Q14166
TTLL12	ENST00000494035.1 link	c.-87A>G		5_prime_UTR_variant	Exon 3 of 4	2		ENSP00000476297.1	V9GY16
TTLL12	ENST00000484711.1 link	n.782A>G		non_coding_transcript_exon_variant	Exon 2 of 3	2

Frequencies

GnomAD3 genomes

AF:

0.0000789

AC:

AN:

152020

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.000177

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000781

AC:

AN:

243236

Hom.:

AF XY:

0.0000757

AC XY:

AN XY:

132170

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000293

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:

0.000164

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000466

AC:

AN:

1457682

Hom.:

Cov.:

AF XY:

0.0000524

AC XY:

AN XY:

724624

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000225

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000191

Gnomad4 NFE exome

AF:

0.0000577

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000789

AC:

AN:

152020

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74266

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000177

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000130

Hom.:

Bravo

AF:

0.0000680

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000124

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 04, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1651A>G (p.I551V) alteration is located in exon 13 (coding exon 13) of the TTLL12 gene. This alteration results from a A to G substitution at nucleotide position 1651, causing the isoleucine (I) at amino acid position 551 to be replaced by a valine (V). 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

0.13

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.57

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.052

Eigen

Uncertain

0.24

Eigen_PC

Benign

0.20

FATHMM_MKL

Benign

0.75

LIST_S2

Benign

0.80

M_CAP

Benign

0.0058

MetaRNN

Benign

0.22

MetaSVM

Benign

-1.2

MutationAssessor

Uncertain

2.6

PrimateAI

Benign

0.46

PROVEAN

Benign

-0.93

REVEL

Benign

0.12

Sift

Uncertain

0.0070

Sift4G

Uncertain

0.012

Polyphen

0.86

Vest4

0.27

MVP

0.25

MPC

0.37

ClinPred

0.16

GERP RS

5.3

Varity_R

0.097

gMVP

0.52

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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