rs200594031

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 2P and 16B. PM2BP4_StrongBP6_Very_StrongBS1

The NM_030973.4(MED25):​c.1231-8C>T variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000156 in 1,613,640 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 0.00034 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

MED25
NM_030973.4 splice_region, splice_polypyrimidine_tract, intron

Scores

2
Splicing: ADA: 0.00003122
2

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -0.246
Variant links:
Genes affected
MED25 (HGNC:28845): (mediator complex subunit 25) This gene encodes a component of the transcriptional coactivator complex termed the Mediator complex. This complex is required for transcription of most RNA polymerase II-dependent genes. The encoded protein plays a role in chromatin modification and in preinitiation complex assembly. Mutations in this gene are associated with Charcot-Marie-Tooth disease type 2B2. [provided by RefSeq, Apr 2010]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.81).
BP6
Variant 19-49831928-C-T is Benign according to our data. Variant chr19-49831928-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 476797.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BS1
Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000335 (51/152116) while in subpopulation AFR AF= 0.000796 (33/41478). AF 95% confidence interval is 0.000581. There are 0 homozygotes in gnomad4. There are 27 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 Protein UniProt
MED25NM_030973.4 linkuse as main transcriptc.1231-8C>T splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant ENST00000312865.10 NP_112235.2
MED25NM_001378355.1 linkuse as main transcriptc.1231-8C>T splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant NP_001365284.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
MED25ENST00000312865.10 linkuse as main transcriptc.1231-8C>T splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant 1 NM_030973.4 ENSP00000326767 Q71SY5-1

Frequencies

GnomAD3 genomes
AF:
0.000336
AC:
51
AN:
151998
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.000798
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000655
Gnomad ASJ
AF:
0.00288
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000103
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000219
AC:
55
AN:
251276
Hom.:
0
AF XY:
0.000199
AC XY:
27
AN XY:
135876
show subpopulations
Gnomad AFR exome
AF:
0.000863
Gnomad AMR exome
AF:
0.0000868
Gnomad ASJ exome
AF:
0.000695
Gnomad EAS exome
AF:
0.0000544
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.0000924
Gnomad NFE exome
AF:
0.000211
Gnomad OTH exome
AF:
0.000652
GnomAD4 exome
AF:
0.000138
AC:
201
AN:
1461524
Hom.:
0
Cov.:
34
AF XY:
0.000150
AC XY:
109
AN XY:
727074
show subpopulations
Gnomad4 AFR exome
AF:
0.000777
Gnomad4 AMR exome
AF:
0.0000894
Gnomad4 ASJ exome
AF:
0.00107
Gnomad4 EAS exome
AF:
0.0000504
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.000112
Gnomad4 NFE exome
AF:
0.000112
Gnomad4 OTH exome
AF:
0.000182
GnomAD4 genome
AF:
0.000335
AC:
51
AN:
152116
Hom.:
0
Cov.:
32
AF XY:
0.000363
AC XY:
27
AN XY:
74356
show subpopulations
Gnomad4 AFR
AF:
0.000796
Gnomad4 AMR
AF:
0.0000654
Gnomad4 ASJ
AF:
0.00288
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000103
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000230
Hom.:
0
Bravo
AF:
0.000332

ClinVar

Significance: Likely benign
Submissions summary: Benign:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Charcot-Marie-Tooth disease type 2 Benign:1
Likely benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 22, 2024- -
Congenital cataract-microcephaly-nevus flammeus simplex-severe intellectual disability syndrome Benign:1
Likely benign, criteria provided, single submitterclinical testingARUP Laboratories, Molecular Genetics and Genomics, ARUP LaboratoriesApr 17, 2020- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.81
CADD
Benign
1.2
DANN
Benign
0.35

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.000031
dbscSNV1_RF
Benign
0.0
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.

Other links and lift over

dbSNP: rs200594031; hg19: chr19-50335185; API