Early-Onset Sarcoma & MAX Gene Variant

by Priyanka Patel

A 28-year-old man developed a rare liver sarcoma, raising questions about a potential link between a specific genetic variant and multiple cancer types.

Genetic Link to Multiple Cancers?

A recent case report highlights a potential connection between a genetic variant and an increased risk for various cancers, extending beyond the typically observed tumors.

A germline pathogenic variant in the MYC-associated factor X (MAX) gene is a rare cause of hereditary pheochromocytoma and paraganglioma (PPGL) syndrome.

Researchers presented the case of a young man diagnosed with bilateral pheochromocytomas (PCC), tumors arising from the adrenal glands. Later, he developed a liver sarcoma. This sarcoma was linked to a TP53 variant and a PLEKHO2::BRAF gene fusion.

Understanding MAX Variants

While MAX-related PPGLs often present with bilateral tumors in about 67% of cases and an adrenergic phenotype, the full spectrum of tumors associated with these variants remains unclear. The discovery of sarcoma in this young patient suggests a possible predisposition to developing sarcomas among individuals with MAX pathogenic variants.

  • A 28-year-old man with a germline MAX variant developed bilateral pheochromocytomas and later a liver sarcoma.
  • The sarcoma was associated with TP53 and PLEKHO2::BRAF gene alterations.
  • This case suggests MAX variants may increase the risk of sarcomas.
  • Researchers recommend expanding surveillance to include whole-body imaging for early detection of extra-adrenal tumors.

These findings imply that MAX-related PPGLs could be associated with other malignancies, including sarcomas. The study advocates for updating surveillance guidelines to incorporate whole-body imaging. This would aid in the early detection of tumors outside the adrenal glands.

Given the rarity of MAX pathogenic variants, more research is needed. Further studies will help to fully understand the range of presentations and establish comprehensive evidence-based surveillance strategies for these rare genetic conditions.

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