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GeneBe

13-27622867-G-A

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_ModerateBP6_ModerateBS1

The NM_015972.4(POLR1D):c.27-8G>A variant causes a splice region, splice polypyrimidine tract, intron change. The variant allele was found at a frequency of 0.000095 in 1,578,626 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00010 ( 0 hom. )

Consequence

POLR1D
NM_015972.4 splice_region, splice_polypyrimidine_tract, intron

Scores

2
Splicing: ADA: 0.02319
2

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 4.13
Variant links:
Genes affected
POLR1D (HGNC:20422): (RNA polymerase I and III subunit D) The protein encoded by this gene is a component of the RNA polymerase I and RNA polymerase III complexes, which function in the synthesis of ribosomal RNA precursors and small RNAs, respectively. Mutations in this gene are a cause of Treacher Collins syndrome (TCS), a craniofacial development disorder. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2011]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.45).
BP6
Variant 13-27622867-G-A is Benign according to our data. Variant chr13-27622867-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 1950196.Status of the report is criteria_provided_single_submitter, 1 stars.
BS1
Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.0000394 (6/152280) while in subpopulation NFE AF= 0.0000735 (5/68020). AF 95% confidence interval is 0.0000285. There are 0 homozygotes in gnomad4. There are 3 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
POLR1DNM_015972.4 linkuse as main transcriptc.27-8G>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant ENST00000302979.5

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
POLR1DENST00000302979.5 linkuse as main transcriptc.27-8G>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant 1 NM_015972.4 P1P0DPB6-1

Frequencies

GnomAD3 genomes
AF:
0.0000329
AC:
5
AN:
152162
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.0000735
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000682
AC:
17
AN:
249338
Hom.:
0
AF XY:
0.0000740
AC XY:
10
AN XY:
135212
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.0000329
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000142
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000101
AC:
144
AN:
1426346
Hom.:
0
Cov.:
25
AF XY:
0.000117
AC XY:
83
AN XY:
711666
show subpopulations
Gnomad4 AFR exome
AF:
0.0000610
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000117
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.000127
Gnomad4 OTH exome
AF:
0.0000676
GnomAD4 genome
AF:
0.0000394
AC:
6
AN:
152280
Hom.:
0
Cov.:
32
AF XY:
0.0000403
AC XY:
3
AN XY:
74456
show subpopulations
Gnomad4 AFR
AF:
0.0000241
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000735
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000772
Hom.:
0
Bravo
AF:
0.0000264
Asia WGS
AF:
0.000289
AC:
1
AN:
3478
EpiCase
AF:
0.000109
EpiControl
AF:
0.0000594

ClinVar

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

Submissions by phenotype

not provided Benign:1
Likely benign, criteria provided, single submitterclinical testingInvitaeAug 27, 2023- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.45
Cadd
Benign
15
Dann
Benign
0.89

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.023
dbscSNV1_RF
Benign
0.25
SpliceAI score (max)
0.060
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.

Other links and lift over

dbSNP: rs530941743; hg19: chr13-28197004; API