Genetic Variant NM_024339.5:c.16C>A (chr16-3024342-C-A) – 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_024339.5(THOC6):c.16C>A(p.Pro6Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,848 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P6S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

THOC6
NM_024339.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.93

Publications

0 publications found

Variant links:

Genes affected

THOC6 (HGNC:28369): (THO complex subunit 6) This gene encodes a subunit of the multi-protein THO complex, which is involved in coordination between transcription and mRNA processing. The THO complex is a component of the TREX (transcription/export) complex, which is involved in transcription and export of mRNAs. A missense mutation in this gene is associated with a neurodevelopmental disorder called Beaulieu-Boycott-Innes syndrome. [provided by RefSeq, Dec 2016]

THOC6 links:

HCFC1R1 (HGNC:21198): (host cell factor C1 regulator 1) Located in nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

HCFC1R1 links:

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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=0.19096515).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024339.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
THOC6	NM_024339.5	MANE Select	c.16C>A	p.Pro6Thr	missense	Exon 1 of 13	NP_077315.2
THOC6	NM_001347704.2		c.16C>A	p.Pro6Thr	missense	Exon 2 of 14	NP_001334633.1	Q86W42-1
THOC6	NM_001142350.3		c.16C>A	p.Pro6Thr	missense	Exon 1 of 12	NP_001135822.1	Q86W42-3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
THOC6	ENST00000326266.13	TSL:1 MANE Select	c.16C>A	p.Pro6Thr	missense	Exon 1 of 13	ENSP00000326531.8	Q86W42-1
THOC6	ENST00000574549.5	TSL:1	c.-53C>A		5_prime_UTR	Exon 2 of 14	ENSP00000458295.1	Q86W42-2
THOC6	ENST00000571057.5	TSL:1	n.300C>A		non_coding_transcript_exon	Exon 1 of 4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461848

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727234

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53404

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111992

Other (OTH)

AF:

0.00

AC:

AN:

60388

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.077

BayesDel_addAF

Benign

-0.15

BayesDel_noAF

Benign

-0.46

CADD

Benign

(source)

DANN

Benign

0.94

DEOGEN2

Benign

0.039

Eigen

Benign

-0.70

Eigen_PC

Benign

-0.71

FATHMM_MKL

Benign

0.11

LIST_S2

Benign

0.79

M_CAP

Benign

0.053

MetaRNN

Benign

0.19

MetaSVM

Benign

-0.89

MutationAssessor

Benign

1.4

PhyloP100

1.9

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-0.51

REVEL

Benign

0.087

Sift4G

Pathogenic

0.0

Polyphen

0.0

Vest4

0.34

MutPred

0.62

Gain of sheet (P = 0.0477)

MVP

0.72

MPC

0.10

ClinPred

0.16

GERP RS

3.3

PromoterAI

0.14

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Varity_R

0.32

gMVP

0.53

Mutation Taster

=93/7

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over