rs2255796

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_StrongBP6_ModerateBA1

The NM_001371623.1(TCOF1):​c.640-223G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.4 in 152,018 control chromosomes in the GnomAD database, including 12,357 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.40 ( 12357 hom., cov: 32)

Consequence

TCOF1
NM_001371623.1 intron

Scores

2

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.706
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]

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -14 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.88).
BP6
Variant 5-150371783-G-A is Benign according to our data. Variant chr5-150371783-G-A is described in ClinVar as [Benign]. Clinvar id is 1274744.Status of the report is criteria_provided_single_submitter, 1 stars.
BA1
GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.448 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
TCOF1NM_001371623.1 linkc.640-223G>A intron_variant Intron 6 of 26 ENST00000643257.2 NP_001358552.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
TCOF1ENST00000643257.2 linkc.640-223G>A intron_variant Intron 6 of 26 NM_001371623.1 ENSP00000493815.1 Q13428-3

Frequencies

GnomAD3 genomes
AF:
0.400
AC:
60741
AN:
151898
Hom.:
12360
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.346
Gnomad AMI
AF:
0.421
Gnomad AMR
AF:
0.360
Gnomad ASJ
AF:
0.493
Gnomad EAS
AF:
0.394
Gnomad SAS
AF:
0.465
Gnomad FIN
AF:
0.383
Gnomad MID
AF:
0.506
Gnomad NFE
AF:
0.434
Gnomad OTH
AF:
0.400
We have no GnomAD4 exomes data on this position. Probably position not covered by the project.
GnomAD4 genome
AF:
0.400
AC:
60762
AN:
152018
Hom.:
12357
Cov.:
32
AF XY:
0.399
AC XY:
29646
AN XY:
74296
show subpopulations
African (AFR)
AF:
0.346
AC:
14340
AN:
41474
American (AMR)
AF:
0.361
AC:
5513
AN:
15274
Ashkenazi Jewish (ASJ)
AF:
0.493
AC:
1710
AN:
3466
East Asian (EAS)
AF:
0.393
AC:
2032
AN:
5164
South Asian (SAS)
AF:
0.464
AC:
2234
AN:
4812
European-Finnish (FIN)
AF:
0.383
AC:
4045
AN:
10572
Middle Eastern (MID)
AF:
0.514
AC:
151
AN:
294
European-Non Finnish (NFE)
AF:
0.434
AC:
29515
AN:
67942
Other (OTH)
AF:
0.398
AC:
840
AN:
2112
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.501
Heterozygous variant carriers
0
1860
3719
5579
7438
9298
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
Variant carriers
0
580
1160
1740
2320
2900
<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:
0.330
Hom.:
1229
Bravo
AF:
0.393
Asia WGS
AF:
0.380
AC:
1320
AN:
3478

ClinVar

Significance: Benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Benign:1
Oct 16, 2018
GeneDx
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.88
CADD
Benign
0.59
DANN
Benign
0.70
PhyloP100
-0.71
PromoterAI
-0.021
Neutral
Mutation Taster
=100/0
polymorphism (auto)

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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Other links and lift over

dbSNP: rs2255796; hg19: chr5-149751346; COSMIC: COSV60346964; COSMIC: COSV60346964; API