Table 6 in the 2023 nosology includes X-Linked OP, PLS3-related and X-L OP, MBTPS2-related (also known as OMIM OI type XIX, MBTPS2-related as well as three autosomal dominant forms of Osteoporosis, OP, WNT1-related, OP, LRP5—heterozygous-related and OP, ARHGAP25-related. The gene discussed is MBTPS2; the disease is osteoporosis.