is_feature_affected_by class_to_feature_relation A relation between a genomic feature class (typically a gene class) and an instance of a sequence feature or qualified sequence feature that represents or affects some change in the sequence or expression of the genomic feature. This is an organizational grouping class to collect all relations used to link genomic feature classes (typically genes) to instance of a genomic feature sequence feature or qualified sequence feature. For example, linking a gene class IRI to an instance of an allele of that gene class. Such links support phenotype propagation from features/variants to genes (e.g. for Monarch Initiative use cases)