A: The variant NC_000021.9:g.41740055_41740056dup in gene RIPK4 is classified as 'Benign' for Popliteal_pterygium_syndrome. Molecular consequence: SO:0001624: 3_prime_UTR_variant. Variant type: Duplication. Disease database links: MONDO:MONDO:0017435,MedGen:C0265259,Orphanet:294963. Review status: criteria provided, single submitter.