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Excerpted from the GeneReview: ALK-Related Neuroblastic Tumor Susceptibility
ALK-related neuroblastic tumor susceptibility results from heterozygosity for a germline ALK activating pathogenic variant in the tyrosine kinase domain that predisposes to neuroblastic tumors. The spectrum of neuroblastic tumors includes neuroblastoma, ganglioneuroblastoma, and ganglioneuroma. Neuroblastoma is a more malignant tumor and ganglioneuroma a more benign tumor. Depending on the histologic findings ganglioneuroblastoma can behave in a more aggressive fashion, like neuroblastoma, or in a benign fashion, like ganglioneuroma. At present there are no data regarding the lifetime risk to an individual with a germline ALK pathogenic variant of developing a neuroblastic tumor. Preliminary data from the ten reported families with ALK-related neuroblastic tumor susceptibility suggest that the overall penetrance is around 57% with the risk for neuroblastic tumor development highest in infancy and decreasing by late childhood.

Genes See tests for all associated and related genes

  • Also known as: CD246, NBLST3, ALK
    Summary: ALK receptor tyrosine kinase

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