A syndrome that is characterized by congenital joint contractures, renal tubular dysfunction, cholestasis, severe failure to thrive, ichthyosis and a defect in platelet alpha-granule biogenesis and that has_material_basis_in homozygous or compound heterozygous mutation in the VPS33B gene or homozygous or compound heterozygous mutation in the VIPAR gene on chromosome 14q24.3.