Genetic Variant MDM2:c.*1777G>C (chr12-68841626-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_002392.6(MDM2):c.*1777G>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000658 in 151,990 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

MDM2
NM_002392.6 3_prime_UTR

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.570

Publications

21 publications found

Variant links:

Genes affected

MDM2 (HGNC:6973): (MDM2 proto-oncogene) This gene encodes a nuclear-localized E3 ubiquitin ligase. The encoded protein can promote tumor formation by targeting tumor suppressor proteins, such as p53, for proteasomal degradation. This gene is itself transcriptionally-regulated by p53. Overexpression or amplification of this locus is detected in a variety of different cancers. There is a pseudogene for this gene on chromosome 2. Alternative splicing results in a multitude of transcript variants, many of which may be expressed only in tumor cells. [provided by RefSeq, Jun 2013]

MDM2 Gene-Disease associations (from GenCC):

Li-Fraumeni syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
lessel-kubisch syndrome
Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

MDM2 links:

ENSG00000257181 (HGNC:):

ENSG00000257181 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.85).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002392.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
MDM2	NM_002392.6	MANE Select	c.*1777G>C	3_prime_UTR	Exon 11 of 11	NP_002383.2	Q00987-11
MDM2	NM_001367990.1		c.*1777G>C	3_prime_UTR	Exon 11 of 11	NP_001354919.1	Q00987-1
MDM2	NM_001145337.3		c.*1777G>C	3_prime_UTR	Exon 11 of 11	NP_001138809.1	A0A0A8KB75

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
MDM2	ENST00000258149.11	TSL:1 MANE Select	c.*1777G>C	3_prime_UTR	Exon 11 of 11	ENSP00000258149.6	Q00987-11
MDM2	ENST00000951805.1		c.*1777G>C	3_prime_UTR	Exon 11 of 11	ENSP00000621864.1
ENSG00000257181	ENST00000553141.1	TSL:3	n.447C>G	non_coding_transcript_exon	Exon 2 of 2

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151872

Hom.:

Cov.:

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

57504

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

26552

African (AFR)

AF:

0.00

AC:

AN:

2528

American (AMR)

AF:

0.00

AC:

AN:

1666

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3686

East Asian (EAS)

AF:

0.00

AC:

AN:

8636

South Asian (SAS)

AF:

0.00

AC:

AN:

530

European-Finnish (FIN)

AF:

0.00

AC:

AN:

Middle Eastern (MID)

AF:

0.00

AC:

AN:

368

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

35366

Other (OTH)

AF:

0.00

AC:

AN:

4682

GnomAD4 genome

AF:

0.00000658

AC:

AN:

151990

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74288

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41434

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3464

East Asian (EAS)

AF:

0.00

AC:

AN:

5168

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10536

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67968

Other (OTH)

AF:

0.00

AC:

AN:

2108

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

2833

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.85

CADD

Benign

3.9

(source)

DANN

Benign

0.61

PhyloP100

0.57

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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over