Table 2.

Classification of genetic variants

ClassificationLikelihood of being pathogenicImplications for managementImplications for family members
Pathogenic >0.99 Follow management guidelines for syndrome Offer testing to at-risk relatives and related bone marrow donors 
Likely pathogenic 0.95-0.99 Follow management guidelines for syndrome Offer testing to at-risk relatives and related bone marrow donors 
Uncertain 0.05-0.949 Do not consider in management planning Do not test at-risk relatives or related bone marrow donors 
Likely not pathogenic 0.001-0.049 Do not consider in management planning Do not test at-risk relatives or related bone marrow donors 
Not pathogenic <0.001 Do not consider in management planning Do not test at-risk relatives or related bone marrow donors 
ClassificationLikelihood of being pathogenicImplications for managementImplications for family members
Pathogenic >0.99 Follow management guidelines for syndrome Offer testing to at-risk relatives and related bone marrow donors 
Likely pathogenic 0.95-0.99 Follow management guidelines for syndrome Offer testing to at-risk relatives and related bone marrow donors 
Uncertain 0.05-0.949 Do not consider in management planning Do not test at-risk relatives or related bone marrow donors 
Likely not pathogenic 0.001-0.049 Do not consider in management planning Do not test at-risk relatives or related bone marrow donors 
Not pathogenic <0.001 Do not consider in management planning Do not test at-risk relatives or related bone marrow donors 

Adapted with permission from the International Agency for Research on Cancer Unclassified Genetic Variants Working Group.34 

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