dbSNP rs181102251: TCOF1:p.Ala948Ser (chr5-150379715-G-T) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001371623.1(TCOF1):c.2842G>T(p.Ala948Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000564 in 1,614,156 control chromosomes in the GnomAD database, including 7 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00057 ( 7 hom. )

Consequence

TCOF1
NM_001371623.1 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: -0.134

Publications

4 publications found

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 Gene-Disease associations (from GenCC):

Treacher Collins syndrome 1
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), G2P
Treacher-Collins syndrome
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet

TCOF1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0040844083).

BP6

Variant 5-150379715-G-T is Benign according to our data. Variant chr5-150379715-G-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 352220.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.000525 (80/152368) while in subpopulation EAS AF = 0.0125 (65/5188). AF 95% confidence interval is 0.0101. There are 0 homozygotes in GnomAd4. There are 41 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 80 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001371623.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TCOF1	NM_001371623.1	MANE Select	c.2842G>T	p.Ala948Ser	missense	Exon 17 of 27	NP_001358552.1	Q13428-3
TCOF1	NM_001135243.2		c.2842G>T	p.Ala948Ser	missense	Exon 17 of 27	NP_001128715.1	Q13428-1
TCOF1	NM_001135244.2		c.2842G>T	p.Ala948Ser	missense	Exon 17 of 26	NP_001128716.1	Q13428-7

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TCOF1	ENST00000643257.2	MANE Select	c.2842G>T	p.Ala948Ser	missense	Exon 17 of 27	ENSP00000493815.1	Q13428-3
TCOF1	ENST00000504761.6	TSL:1	c.2842G>T	p.Ala948Ser	missense	Exon 17 of 26	ENSP00000421655.2	Q13428-1
TCOF1	ENST00000323668.11	TSL:1	c.2611G>T	p.Ala871Ser	missense	Exon 16 of 26	ENSP00000325223.6	Q13428-2

Frequencies

GnomAD3 genomes

AF:

0.000519

AC:

AN:

152252

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.0123

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.000955

GnomAD2 exomes

AF:

0.00143

AC:

358

AN:

250598

AF XY:

0.00146

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000232

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0164

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000106

Gnomad OTH exome

AF:

0.000654

GnomAD4 exome

AF:

0.000568

AC:

831

AN:

1461788

Hom.:

Cov.:

AF XY:

0.000589

AC XY:

428

AN XY:

727192

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.000201

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.0158

AC:

626

AN:

39700

South Asian (SAS)

AF:

0.00114

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53346

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000540

AC:

AN:

1111992

Other (OTH)

AF:

0.000580

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

126

190

253

316

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<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

AF:

0.000525

AC:

AN:

152368

Hom.:

Cov.:

AF XY:

0.000550

AC XY:

AN XY:

74506

show subpopulations

African (AFR)

AF:

0.0000240

AC:

AN:

41590

American (AMR)

AF:

0.000131

AC:

AN:

15312

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.0125

AC:

AN:

5188

South Asian (SAS)

AF:

0.000414

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000118

AC:

AN:

68036

Other (OTH)

AF:

0.000945

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000134

Hom.:

Bravo

AF:

0.000907

ExAC

AF:

0.00134

AC:

163

Asia WGS

AF:

0.00491

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Treacher Collins syndrome 1 (2)

not provided (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.41

BayesDel_noAF

Benign

-0.35

CADD

Benign

(source)

DANN

Benign

0.95

DEOGEN2

Benign

0.11

Eigen

Benign

-0.51

Eigen_PC

Benign

-0.63

FATHMM_MKL

Benign

0.15

LIST_S2

Benign

0.78

MetaRNN

Benign

0.0041

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.4

PhyloP100

-0.13

PrimateAI

Benign

0.33

PROVEAN

Benign

-1.8

REVEL

Benign

0.20

Sift

Benign

0.12

Sift4G

Benign

0.28

Polyphen

0.98

Vest4

0.090

MVP

0.40

MPC

0.38

ClinPred

0.029

GERP RS

3.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.9

Varity_R

0.082

gMVP

0.060

Mutation Taster

=98/2

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over