rs1555340550

Variant names:

• chr14-65077979-TC-T
• rs1555340550
• NM_002382.5:c.228delG

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_002382.5(MAX):​c.228delG​(p.Asn78ThrfsTer92) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: MAX NM_002382.5 frameshift
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:2
• Conservation: PhyloP100: 3.29
• Publications: 0 publications found

Genes affected

MAX (HGNC:6913): (MYC associated factor X) The protein encoded by this gene is a member of the basic helix-loop-helix leucine zipper (bHLHZ) family of transcription factors. It is able to form homodimers and heterodimers with other family members, which include Mad, Mxi1 and Myc. Myc is an oncoprotein implicated in cell proliferation, differentiation and apoptosis. The homodimers and heterodimers compete for a common DNA target site (the E box) and rearrangement among these dimer forms provides a complex system of transcriptional regulation. Mutations of this gene have been reported to be associated with hereditary pheochromocytoma. A pseudogene of this gene is located on the long arm of chromosome 7. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2012]

MAX Gene-Disease associations (from GenCC):

• hereditary pheochromocytoma-paraganglioma

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
• pheochromocytoma

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
• polydactyly-macrocephaly syndrome

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Pathogenic. The variant received 18 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 14-65077979-TC-T is Pathogenic according to our data. Variant chr14-65077979-TC-T is described in ClinVar as Pathogenic. ClinVar VariationId is 532511.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002382.5. 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
	MAX	NM_002382.5	MANE Select	c.228delG	p.Asn78ThrfsTer92	frameshift	Exon 4 of 5	NP_002373.3
	MAX	NM_001407094.1		c.228delG	p.Asn78ThrfsTer92	frameshift	Exon 5 of 6	NP_001394023.1	P61244-1
	MAX	NM_001407095.1		c.201delG	p.Asn69ThrfsTer92	frameshift	Exon 4 of 5	NP_001394024.1	P61244-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAX	ENST00000358664.9	TSL:1 MANE Select	c.228delG	p.Asn78ThrfsTer92	frameshift	Exon 4 of 5	ENSP00000351490.4	P61244-1
	MAX	ENST00000358402.8	TSL:1	c.201delG	p.Asn69ThrfsTer92	frameshift	Exon 3 of 4	ENSP00000351175.4	P61244-2
	MAX	ENST00000284165.10	TSL:1	c.228delG	p.Asn78ThrfsTer70	frameshift	Exon 4 of 4	ENSP00000284165.6	P61244-4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
1	-	-	Hereditary cancer-predisposing syndrome (1)
1	-	-	Hereditary pheochromocytoma-paraganglioma (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		3.3
Mutation Taster		=2/198	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs1555340550; hg19: chr14-65544697;