GJB2 and nodular sclerosis classical Hodgkin lymphoma: For example, Freeman et al.’s [49] discussion of views regarding genetic testing for deafness in reproductive settings, highlighted that the recent American College of Medical Genetics and Genomics practice guidelines [40] recommended the inclusion of GJB2 variants in prenatal genetic screening on the basis of prevalence and NSHL being categorised as ‘moderately severe’ [50].