article_snippet.sent: A family faces an anxious wait after being told all four of A family could get leukaemia.
article_snippet.sent: A few years ago we'd have never found out until Rachel got leukaemia,' She said. '
article_snippet.sent: we've already been told my son Steven's not a bone marrow match, so Rachel will need to go on the bone marrow register.'
article_snippet.sent: Professor Inderjeet Dokal, of St Bartholomew's Hospital in London, is an expert in Rachel's condition.
article_snippet.sent: my son Steven added: 'If her brothers and sisters have the same defect, her brothers and sisters can't be a bone marrow donor. 'a bone marrow donor has to be both tissue type compatible and also negative for the genetic mutation, so a bone marrow donor makes the genetic mutation more difficult to find a suitable donor.'