My ds1 (31/2yrs) has this, his Hb currently is at 8 he is pale and v mildly jaundiced but spleen not enlarged. My dd hasnt inherited. My ds2 (6 wks) is due at hospital tomorrow for more tests to see if he has inherited it...was really jaundiced at birth which apparently can be an early indication.
After reading prev. thread by Binker and williamandsamsmum i just wondered when your dc have had blood transfusions...at what level was their Hb?