chr18-658147-C-A

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_001071.4(TYMS):​c.205+200C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00994 in 1,583,902 control chromosomes in the GnomAD database, including 92 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.0079 ( 4 hom., cov: 33)
Exomes 𝑓: 0.010 ( 88 hom. )

Consequence

TYMS
NM_001071.4 intron

Scores

2

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.722
Variant links:
Genes affected
TYMS (HGNC:12441): (thymidylate synthetase) Thymidylate synthase catalyzes the methylation of deoxyuridylate to deoxythymidylate using, 10-methylenetetrahydrofolate (methylene-THF) as a cofactor. This function maintains the dTMP (thymidine-5-prime monophosphate) pool critical for DNA replication and repair. The enzyme has been of interest as a target for cancer chemotherapeutic agents. It is considered to be the primary site of action for 5-fluorouracil, 5-fluoro-2-prime-deoxyuridine, and some folate analogs. Expression of this gene and that of a naturally occurring antisense transcript, mitochondrial enolase superfamily member 1 (GeneID:55556), vary inversely when cell-growth progresses from late-log to plateau phase. Polymorphisms in this gene may be associated with etiology of neoplasia, including breast cancer, and response to chemotherapy. [provided by RefSeq, Aug 2017]
TYMSOS (HGNC:29553): (TYMS opposite strand RNA)

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.53).
BP6
Variant 18-658147-C-A is Benign according to our data. Variant chr18-658147-C-A is described in ClinVar as [Benign]. Clinvar id is 2648512.Status of the report is criteria_provided_single_submitter, 1 stars.
BS2
High Homozygotes in GnomAd4 at 4 Digenic gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
TYMSNM_001071.4 linkuse as main transcriptc.205+200C>A intron_variant ENST00000323274.15
TYMSOSNR_171001.1 linkuse as main transcriptn.145G>T non_coding_transcript_exon_variant 1/2
TYMSNM_001354867.2 linkuse as main transcriptc.205+200C>A intron_variant
TYMSNM_001354868.2 linkuse as main transcriptc.205+200C>A intron_variant

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
TYMSENST00000323274.15 linkuse as main transcriptc.205+200C>A intron_variant 1 NM_001071.4 P1P04818-1
TYMSOSENST00000585033.1 linkuse as main transcriptn.123G>T non_coding_transcript_exon_variant 1/22

Frequencies

GnomAD3 genomes
AF:
0.00787
AC:
1196
AN:
151932
Hom.:
4
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00225
Gnomad AMI
AF:
0.0154
Gnomad AMR
AF:
0.0120
Gnomad ASJ
AF:
0.0170
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00270
Gnomad FIN
AF:
0.00217
Gnomad MID
AF:
0.00968
Gnomad NFE
AF:
0.0115
Gnomad OTH
AF:
0.0120
GnomAD3 exomes
AF:
0.00751
AC:
1546
AN:
205736
Hom.:
14
AF XY:
0.00748
AC XY:
851
AN XY:
113728
show subpopulations
Gnomad AFR exome
AF:
0.00195
Gnomad AMR exome
AF:
0.00787
Gnomad ASJ exome
AF:
0.0184
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00253
Gnomad FIN exome
AF:
0.00161
Gnomad NFE exome
AF:
0.0105
Gnomad OTH exome
AF:
0.0108
GnomAD4 exome
AF:
0.0102
AC:
14546
AN:
1431848
Hom.:
88
Cov.:
32
AF XY:
0.0100
AC XY:
7126
AN XY:
711104
show subpopulations
Gnomad4 AFR exome
AF:
0.00186
Gnomad4 AMR exome
AF:
0.00810
Gnomad4 ASJ exome
AF:
0.0176
Gnomad4 EAS exome
AF:
0.0000262
Gnomad4 SAS exome
AF:
0.00241
Gnomad4 FIN exome
AF:
0.00249
Gnomad4 NFE exome
AF:
0.0116
Gnomad4 OTH exome
AF:
0.00983
GnomAD4 genome
AF:
0.00786
AC:
1195
AN:
152054
Hom.:
4
Cov.:
33
AF XY:
0.00749
AC XY:
557
AN XY:
74370
show subpopulations
Gnomad4 AFR
AF:
0.00224
Gnomad4 AMR
AF:
0.0120
Gnomad4 ASJ
AF:
0.0170
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00270
Gnomad4 FIN
AF:
0.00217
Gnomad4 NFE
AF:
0.0115
Gnomad4 OTH
AF:
0.0118
Alfa
AF:
0.0113
Hom.:
6
Bravo
AF:
0.00818
Asia WGS
AF:
0.00115
AC:
4
AN:
3478

ClinVar

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

Submissions by phenotype

not provided Benign:1
Benign, criteria provided, single submitterclinical testingCeGaT Center for Human Genetics TuebingenJun 01, 2024TYMSOS: BS1, BS2 -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.53
CADD
Benign
3.7
DANN
Benign
0.68

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.020
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: rs182344736; hg19: chr18-658147; COSMIC: COSV105176282; COSMIC: COSV105176282; API