8-127738434-A-G

Variant names:

• chr8-127738434-A-G
• rs750664148
• NM_002467.6:c.217A>G

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PP2 PP5_Moderate

The NM_002467.6(MYC):​c.217A>G​(p.Thr73Ala) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T73N) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: MYC NM_002467.6 missense
• Clinical Significance: Pathogenic criteria provided, single submitter P:1 O:1
• Conservation: PhyloP100: 6.08
• Publications: 42 publications found

Genes affected

MYC (HGNC:7553): (MYC proto-oncogene, bHLH transcription factor) This gene is a proto-oncogene and encodes a nuclear phosphoprotein that plays a role in cell cycle progression, apoptosis and cellular transformation. The encoded protein forms a heterodimer with the related transcription factor MAX. This complex binds to the E box DNA consensus sequence and regulates the transcription of specific target genes. Amplification of this gene is frequently observed in numerous human cancers. Translocations involving this gene are associated with Burkitt lymphoma and multiple myeloma in human patients. There is evidence to show that translation initiates both from an upstream, in-frame non-AUG (CUG) and a downstream AUG start site, resulting in the production of two isoforms with distinct N-termini. [provided by RefSeq, Aug 2017]

CASC11 (HGNC:48939): (cancer susceptibility 11)

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 11 curated pathogenic missense variants (we use a threshold of 10). The gene has 2 curated benign missense variants. Gene score misZ: 1.2227 (below the threshold of 3.09). Trascript score misZ: 1.518 (below the threshold of 3.09). GenCC associations: The gene is linked to Burkitt lymphoma.
• PP5: Variant 8-127738434-A-G is Pathogenic according to our data. Variant chr8-127738434-A-G is described in ClinVar as Pathogenic. ClinVar VariationId is 2658815.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002467.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYC	NM_002467.6	MANE Select	c.217A>G	p.Thr73Ala	missense	Exon 2 of 3	NP_002458.2
	MYC	NM_001354870.1		c.214A>G	p.Thr72Ala	missense	Exon 2 of 3	NP_001341799.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYC	ENST00000621592.8	TSL:1 MANE Select	c.217A>G	p.Thr73Ala	missense	Exon 2 of 3	ENSP00000478887.2
	MYC	ENST00000524013.2	TSL:1	c.214A>G	p.Thr72Ala	missense	Exon 2 of 3	ENSP00000430235.2
	MYC	ENST00000377970.6	TSL:1	c.172A>G	p.Thr58Ala	missense	Exon 2 of 3	ENSP00000367207.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000279 Hom.: 0

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1 Other:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Pathogenic:1

Jul 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

MYC: PM1:Strong, PM2, PS3:Moderate, PS4:Moderate

Acute myeloid leukemia Other:1

Jan 24, 2024

Molecular Diagnostics Laboratory, Fox Chase Cancer Center - Temple Health

Significance:

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant was detected in a relapsed acute myeloid leukemia patient as a somatic mutation accompanied by a AKAP9::PDGFRA translocation. It is predicted Pathogenic Supporting by FATHMM-MKL, is reported in lymphoid neoplasms in COSMIC (COSV52367574) and cBioPortal, and has not been observed in the general population. Also known as p.Thr58Ala in Ensembl, this variant form of MYC is not subject to a phosphorylation signal that targets MYC for degradation and is an activating oncogenic lesion.

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.95
BayesDel_addAF	Uncertain	0.053	T
BayesDel_noAF	Benign	-0.16
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.44	T
Eigen	Pathogenic	0.71
Eigen_PC	Uncertain	0.66
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.11	T
M_CAP	Benign	0.034	D
MetaRNN	Uncertain	0.60	D
MetaSVM	Benign	-0.72	T
MutationAssessor	Pathogenic	3.2	M
PhyloP100		6.1
PrimateAI	Uncertain	0.60	T
PROVEAN	Pathogenic	-4.6	D
REVEL	Uncertain	0.30
Sift	Benign	0.037	D
Sift4G	Pathogenic	0.0	D
Polyphen		0.99	D
Vest4		0.70
MutPred		0.58		Loss of glycosylation at T58 (P = 0.021)
MVP		0.71
ClinPred		1.0	D
GERP RS		4.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.9
Varity_R		0.61
gMVP		0.70
Mutation Taster		=13/87	disease causing

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: rs750664148; hg19: chr8-128750680; COSMIC: COSV52367574; COSMIC: COSV52367574;