Is MAX p.Ser142= (c.426G>A) pathogenic?

MAX p.Ser142= (c.426G>A) is classified Benign/Likely benign in MAX (ClinVar, Multiple submitters, 7 submitters; last evaluated 2026-06-08). Ultra-rare (popmax 0.0321%, afr); Associated with hereditary neoplastic syndrome.

What condition is associated with MAX p.Ser142= (c.426G>A)?

MAX p.Ser142= (c.426G>A) is associated with hereditary neoplastic syndrome, pheochromocytoma, hereditary pheochromocytoma-paraganglioma (ClinVar).

How common is MAX p.Ser142= (c.426G>A) in the general population?

MAX p.Ser142= (c.426G>A) is ultra-rare (popmax 0.0321%, afr) (gnomAD).

MAX p.Ser142=

c.426G>A · rs145787299 · VCV412781

Benign/Likely benign Multiple submitters

Classification

Benign/Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 7 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.0321%, afr)

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
REVEL	0.05	moderately benign-leaning
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -5.3	GERP -3.9
Overall
CADD	7.502	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0321% African / African-American · 24/74,876 alleles

Filtering AF 0.022% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0187%

Overall 0.00304% 49/1,613,906 alleles · ultra-rare exomes 35/1,461,854 · genomes 14/152,052 · joint denominator

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.0321%	3,120
Remaining individualsnot grpmax-eligible	0.0032%	31,238
South Asian	0.0022%	45,530
European (non-Finnish)	0.00169%	59,001
Admixed American	0.00167%	59,990

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: MAX
Protein: p.Ser142=
Coding: c.426G>A
MANE Select: NM_002382
dbSNP: rs145787299
Type: single nucleotide variant
Location: chr14:65076533 (GRCh38)
Gene constraint: LOEUF 0.288 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 82.07 · 12 PDB
Residue 142: a UniProt-annotated variant site (in pcc; does not repress myc transcriptional activity); a UniProt-annotated variant site (in pcc; uncertain significance); a UniProt-annotated variant site (does not affect myc transcriptional activity); the 'disordered' region

Full MAX gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

hereditary neoplastic syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: pheochromocytoma hereditary pheochromocytoma-paraganglioma

Similar variants

MAX p.Ser142Leu Uncertain significance ★★ ⚠ same residue
MAX p.Ser142Pro Uncertain significance ★ ⚠ same residue
MAX c.295+1G>A Pathogenic ★★ same condition
MAX c.295+1G>T Pathogenic ★★ same condition
MAX p.Ala67Asp Pathogenic/Likely pathogenic ★★ same condition
MAX p.Arg33Ter Pathogenic ★★ same condition
MAX p.Arg75Ter Pathogenic ★★ same condition
MAX p.Gln19Ter Pathogenic/Likely pathogenic ★★ same condition

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/max-p-ser142 (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown