Genetic Variant NM_015140.4:c.1600G>A (chr22-43169544-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_015140.4(TTLL12):c.1600G>A(p.Glu534Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000646 in 1,609,954 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E534V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000067 ( 0 hom. )

Consequence

TTLL12
NM_015140.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.72

Publications

2 publications found

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 was made for transcript

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=0.101923645).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TTLL12	NM_015140.4 link	c.1600G>A	p.Glu534Lys	missense_variant	Exon 12 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.1600G>A	p.Glu534Lys	missense_variant	Exon 12 of 14	1	NM_015140.4	ENSP00000216129.6	Q14166
TTLL12	ENST00000484711.1 link	n.731G>A		non_coding_transcript_exon_variant	Exon 1 of 3	2
TTLL12	ENST00000494035.1 link	c.-138G>A		5_prime_UTR_variant	Exon 2 of 4	2		ENSP00000476297.1	V9GY16

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152248

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:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000524

AC:

AN:

248184

AF XY:

0.0000595

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000294

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000546

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000893

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000672

AC:

AN:

1457706

Hom.:

Cov.:

AF XY:

0.0000580

AC XY:

AN XY:

724584

show subpopulations

African (AFR)

AF:

0.0000300

AC:

AN:

33328

American (AMR)

AF:

0.0000226

AC:

AN:

44272

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25994

East Asian (EAS)

AF:

0.0000253

AC:

AN:

39586

South Asian (SAS)

AF:

0.0000116

AC:

AN:

85946

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53224

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5744

European-Non Finnish (NFE)

AF:

0.0000748

AC:

AN:

1109484

Other (OTH)

AF:

0.000183

AC:

AN:

60128

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.464

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152248

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74378

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41466

American (AMR)

AF:

0.00

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000882

AC:

AN:

68046

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000105

Hom.:

Bravo

AF:

0.0000416

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0000659

AC:

EpiCase

AF:

0.000327

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 28, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1600G>A (p.E534K) alteration is located in exon 12 (coding exon 12) of the TTLL12 gene. This alteration results from a G to A substitution at nucleotide position 1600, causing the glutamic acid (E) at amino acid position 534 to be replaced by a lysine (K). 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

0.089

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.66

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.0092

Eigen

Benign

-0.75

Eigen_PC

Benign

-0.69

FATHMM_MKL

Benign

0.68

LIST_S2

Benign

0.81

M_CAP

Benign

0.0082

MetaRNN

Benign

0.10

MetaSVM

Benign

-0.91

MutationAssessor

Benign

0.55

PhyloP100

1.7

PrimateAI

Benign

0.29

PROVEAN

Benign

0.030

REVEL

Benign

0.054

Sift

Benign

0.31

Sift4G

Benign

0.34

Polyphen

0.015

Vest4

0.30

MVP

0.24

MPC

0.10

ClinPred

0.054

GERP RS

-0.10

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.021

gMVP

0.69

Mutation Taster

=85/15

polymorphism

(source)

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

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NM_015140.4:c.1600G>A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over