“…However, one of these mutations represents a polymorphism (Vorechovsky et al, 1999) and hence the observation is at most of borderline significance. Furthermore, a recent study of 28 families with Rosenow (1925) Parent F71, offspring M42 Hirschfeld (1925) Siblings M67, M70 Schereschewsky (1926) Siblings M61, F54 Vercelotti (1926) Siblings F55, M59 Riccitelli & Ragnotti (1927) Parent M65, offspring F43 Dameshek et al (1929); Gunz & Damashek (1957) MZ twins M54, M55, and offspring M53 Morawitz (1933) Siblings M57, M59 Petri (1933) Siblings M51, M52 Ardashnikov (1934) Cousins M45,?54 Curschmann (1936) Parent M50, offspring M59 Ardashnikov (1937) Cousins M57, M46 Decastello (1939) Siblings M, F; 2 offspring M, F Maack (1940) Siblings M46, M63 Hornbaker (1942) Siblings F39, F55 Additional sibling with CML Rohr (1945) Siblings F58, F62 Offspring of younger sibling with CML Videbaek (1947) Aunt 70, nephew 48 Thiersch (1947) Siblings M49, F48 Frech (1948) Siblings M50, M56 Portmann & Robinson (1951) Siblings M40, F41 Reilly et al (1952) Siblings M36, M54, M56 Stobbe & Taeschner (1952) MZ twins M56, M69 Guasch ( Brem & Morton (1955) Siblings M54, M56 Third sibling M35 with leukaemia Videbaek (1958) Uncle 69, nephew 50 Hudson & Wilson (1960) Siblings M64, M74 Siblings M63, M68 Gunz et al (1962); Siblings F67, M56, M79 Fitzgerald & Hamer (1969) Furbetta & Solinas (1963 Grandparent M69; parent F53; offspring F56 Wisniewski & Weinreich (1966) Parent M71; offspring M44 Rigby et al (1966) 2 half-siblings Ardizzone et al (1968) Siblings M56,…”