NM_001371623.1:c.1120G>T

Variant names:

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001371623.1(TCOF1):c.1120G>T(p.Ala374Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000521 in 1,613,768 control chromosomes in the GnomAD database, including 8 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00098 ( 1 hom., cov: 34)

Exomes 𝑓: 0.00047 ( 7 hom. )

Consequence

TCOF1
NM_001371623.1 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: 1.45

Variant links:

Genes affected

TCOF1 (HGNC:11654): (treacle ribosome biogenesis factor 1) This gene encodes a nucleolar protein with a LIS1 homology domain. The protein is involved in ribosomal DNA gene transcription through its interaction with upstream binding factor (UBF). Mutations in this gene have been associated with Treacher Collins syndrome, a disorder which includes abnormal craniofacial development. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2008]

TCOF1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.005467236).

BP6

Variant 5-150374653-G-T is Benign according to our data. Variant chr5-150374653-G-T is described in ClinVar as [Likely_benign]. Clinvar id is 352200.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr5-150374653-G-T is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.00098 (149/152014) while in subpopulation SAS AF= 0.00561 (27/4812). AF 95% confidence interval is 0.00396. There are 1 homozygotes in gnomad4. There are 74 alleles in male gnomad4 subpopulation. Median coverage is 34. This position pass quality control queck.

BS2

High AC in GnomAd4 at 149 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TCOF1	NM_001371623.1 link	c.1120G>T	p.Ala374Ser	missense_variant	Exon 9 of 27	ENST00000643257.2	NP_001358552.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TCOF1	ENST00000643257.2 link	c.1120G>T	p.Ala374Ser	missense_variant	Exon 9 of 27		NM_001371623.1	ENSP00000493815.1		Q13428-3

Frequencies

GnomAD3 genomes

AF:

0.000915

AC:

139

AN:

151896

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00247

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00136

Gnomad SAS

AF:

0.00561

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000901

AC:

225

AN:

249620

Hom.:

AF XY:

0.00102

AC XY:

138

AN XY:

135244

show subpopulations

Gnomad AFR exome

AF:

0.00173

Gnomad AMR exome

AF:

0.0000868

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000924

Gnomad SAS exome

AF:

0.00539

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.0000446

Gnomad OTH exome

AF:

0.000980

GnomAD4 exome

AF:

0.000473

AC:

691

AN:

1461754

Hom.:

Cov.:

AF XY:

0.000600

AC XY:

436

AN XY:

727182

show subpopulations

Gnomad4 AFR exome

AF:

0.00317

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000302

Gnomad4 SAS exome

AF:

0.00499

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.0000297

Gnomad4 OTH exome

AF:

0.00161

GnomAD4 genome

AF:

0.000980

AC:

149

AN:

152014

Hom.:

Cov.:

AF XY:

0.000996

AC XY:

AN XY:

74320

show subpopulations

Gnomad4 AFR

AF:

0.00270

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00136

Gnomad4 SAS

AF:

0.00561

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000320

Hom.:

Bravo

AF:

0.000774

ESP6500AA

AF:

0.00204

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00117

AC:

142

Asia WGS

AF:

0.0160

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:4

Feb 27, 2019

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 11, 2017

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Feb 26, 2019

Athena Diagnostics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Treacher Collins syndrome 1

Benign:1

Jan 22, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.089

BayesDel_addAF

Benign

-0.40

BayesDel_noAF

Benign

-0.34

CADD

Benign

8.7

DANN

Uncertain

0.97

DEOGEN2

Benign

0.18

.;T;.;.;.;.;.;.;.;.;.;T;T

Eigen

Benign

-0.50

Eigen_PC

Benign

-0.61

FATHMM_MKL

Benign

0.44

LIST_S2

Benign

0.82

T;T;T;T;.;T;T;T;T;T;T;.;T

MetaRNN

Benign

0.0055

T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.85

MutationAssessor

Uncertain

2.6

.;M;.;.;M;.;.;M;M;M;M;M;.

PrimateAI

Benign

0.33

PROVEAN

Benign

-0.84

.;N;N;N;.;.;.;.;N;N;N;N;N

REVEL

Benign

0.10

Sift

Benign

0.069

.;T;T;T;.;.;.;.;T;T;T;T;D

Sift4G

Benign

0.49

.;T;T;T;.;.;.;.;T;T;T;T;T

Polyphen

0.47, 0.42, 0.22, 0.56

.;P;B;B;.;.;.;.;B;P;B;P;.

Vest4

0.23, 0.24, 0.24, 0.25, 0.24, 0.27

MVP

0.44

MPC

0.17

ClinPred

0.0085

GERP RS

2.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.2

Varity_R

0.029

gMVP

0.017

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

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