chr12-68809225-A-C

Variant names:

• chr12-68809225-A-C
• rs1880639329
• NM_002392.6:c.32A>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_002392.6(MDM2):​c.32A>C​(p.Asn11Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,464 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N11S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: MDM2 NM_002392.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.756
• Publications: 0 publications found

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)

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.14952746).

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MDM2	NM_002392.6	MANE Select	c.32A>C	p.Asn11Thr	missense	Exon 2 of 11	NP_002383.2	Q00987-11
	MDM2	NM_001367990.1		c.14A>C	p.Asn5Thr	missense	Exon 2 of 11	NP_001354919.1	Q00987-1
	MDM2	NM_001145337.3		c.14A>C	p.Asn5Thr	missense	Exon 2 of 11	NP_001138809.1	A0A0A8KB75

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MDM2	ENST00000258149.11	TSL:1 MANE Select	c.32A>C	p.Asn11Thr	missense	Exon 2 of 11	ENSP00000258149.6	Q00987-11
	MDM2	ENST00000539479.6	TSL:1	c.14A>C	p.Asn5Thr	missense	Exon 2 of 11	ENSP00000444430.2	Q00987-1
	MDM2	ENST00000350057.9	TSL:1	c.14A>C	p.Asn5Thr	missense	Exon 1 of 9	ENSP00000266624.9	J3KN53

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461464 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727036

African (AFR) AF: 0.00 AC: 0 AN: 33474

American (AMR) AF: 0.00 AC: 0 AN: 44688

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26124

East Asian (EAS) AF: 0.00 AC: 0 AN: 39690

South Asian (SAS) AF: 0.00 AC: 0 AN: 86182

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53398

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1111766

Other (OTH) AF: 0.00 AC: 0 AN: 60376

GnomAD4 genome Cov.: 33

EpiCase AF: 0.0000546

EpiControl AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.093
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.43
CADD	Benign	17
DANN	Uncertain	0.98
DEOGEN2	Benign	0.32	T
Eigen	Benign	-0.25
Eigen_PC	Benign	-0.14
FATHMM_MKL	Benign	0.25	N
LIST_S2	Uncertain	0.87	D
M_CAP	Benign	0.0079	T
MetaRNN	Benign	0.15	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.4	L
PhyloP100		0.76
PrimateAI	Benign	0.45	T
PROVEAN	Uncertain	-3.1	D
REVEL	Benign	0.028
Sift	Uncertain	0.015	D
Sift4G	Benign	0.43	T
Polyphen		0.079	B
Vest4		0.21
MutPred		0.28		Gain of catalytic residue at C2 (P = 0.0032)
MVP		0.51
ClinPred		0.30	T
GERP RS		3.5
PromoterAI		-0.053	Neutral
Varity_R		0.10
gMVP		0.54
Mutation Taster		=82/18	polymorphism

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

Other links and lift over

dbSNP: rs1880639329; hg19: chr12-69203005;