NM_013251.4:c.209-1G>C

Variant names:

Variant summary

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

The NM_013251.4(TAC3):c.209-1G>C variant causes a splice acceptor, intron change. The variant allele was found at a frequency of 0.0000589 in 1,614,074 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: 𝑓 0.00035 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000029 ( 0 hom. )

Consequence

TAC3
NM_013251.4 splice_acceptor, intron

Scores

Splicing: ADA: 1.000

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:1

Conservation

PhyloP100: 3.93

Variant links:

Genes affected

TAC3 (HGNC:11521): (tachykinin precursor 3) This gene encodes a member of the tachykinin family of secreted neuropeptides. The encoded preproprotein is proteolytically processed to generate the mature peptide, which is primarily expressed in the central and peripheral nervous systems and functions as a neurotransmitter. This peptide is the ligand for the neurokinin-3 receptor. This protein is also expressed in the outer syncytiotrophoblast of the placenta and may be associated with pregnancy-induced hypertension and pre-eclampsia. Mutations in this gene are associated with normosmic hypogonadotropic hypogonadism. Alternative splicing results in multiple transcript variants, at least one of which encodes an isoform that is proteolytically processed. [provided by RefSeq, Feb 2016]

TAC3 links:

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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 0.08196721 fraction of the gene. Cryptic splice site detected, with MaxEntScore 4.2, offset of 8, new splice context is: ttggtttcacacatcctaAGgaa. Cryptic site results in frameshift change. If cryptic site found is not functional and variant results in exon loss, it results in inframe change.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 12-57013389-C-G is Pathogenic according to our data. Variant chr12-57013389-C-G is described in ClinVar as [Pathogenic]. Clinvar id is 2075572.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TAC3	NM_013251.4 link	c.209-1G>C		splice_acceptor_variant, intron_variant	Intron 3 of 6	ENST00000458521.7	NP_037383.1	Q9UHF0-1A0A024RB47

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
TAC3	ENST00000458521.7 link	c.209-1G>C	splice_acceptor_variant, intron_variant	Intron 3 of 6	1	NM_013251.4	ENSP00000404056.2	Q9UHF0-1
TAC3	ENST00000300108.7 link	n.209-1G>C	splice_acceptor_variant, intron_variant	Intron 3 of 8	2		ENSP00000300108.3	Q9UHF0-1
TAC3	ENST00000379411.6 link	n.209-1G>C	splice_acceptor_variant, intron_variant	Intron 3 of 7	2		ENSP00000368721.2	Q9UHF0-3
TAC3	ENST00000393867.5 link	n.209-1G>C	splice_acceptor_variant, intron_variant	Intron 3 of 9	2		ENSP00000377445.1	Q9UHF0-2

Frequencies

GnomAD3 genomes

AF:

0.000348

AC:

AN:

152166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00123

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.00

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000994

AC:

AN:

251452

Hom.:

AF XY:

0.0000736

AC XY:

AN XY:

135904

show subpopulations

Gnomad AFR exome

AF:

0.00129

Gnomad AMR exome

AF:

0.000116

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:

0.0000287

AC:

AN:

1461790

Hom.:

Cov.:

AF XY:

0.0000261

AC XY:

AN XY:

727200

show subpopulations

Gnomad4 AFR exome

AF:

0.00111

Gnomad4 AMR exome

AF:

0.0000894

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:

0.0000166

GnomAD4 genome

AF:

0.000348

AC:

AN:

152284

Hom.:

Cov.:

AF XY:

0.000322

AC XY:

AN XY:

74454

show subpopulations

Gnomad4 AFR

AF:

0.00123

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.0000503

Hom.:

Bravo

AF:

0.000340

ESP6500AA

AF:

0.00136

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000107

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1Uncertain:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Pathogenic:1

Jul 21, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

For these reasons, this variant has been classified as Pathogenic. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. Disruption of this splice site has been observed in individuals with Idiopathic hypogonadotropic hypogonadism (PMID: 20194706, 31200363). This variant is present in population databases (rs146391497, gnomAD 0.1%). This sequence change affects an acceptor splice site in intron 3 of the TAC3 gene. It is expected to disrupt RNA splicing. Variants that disrupt the donor or acceptor splice site typically lead to a loss of protein function (PMID: 16199547), and loss-of-function variants in TAC3 are known to be pathogenic (PMID: 20194706, 20332248, 25077900). -

Hypogonadotropic hypogonadism

Uncertain:1

Apr 09, 2025

NHS Central & South Genomic Laboratory Hub

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.31

BayesDel_noAF

Uncertain

0.12

CADD

Pathogenic

DANN

Uncertain

0.99

Eigen

Pathogenic

0.95

Eigen_PC

Pathogenic

0.77

FATHMM_MKL

Pathogenic

0.97

GERP RS

5.9

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.94

SpliceAI score (max)

0.98

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.21

Position offset: -9

DS_AL_spliceai

0.98

Position offset: -1

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