Glanzmann's
Thrombasthenia (GT) can be life-threatening. It is
caused by a deficiency of a protein on the surface of the
platelet, called Glycoprotein IIb/IIIa. As a result, platelets
fail to form a plug at the site of an injury.
Like
Bernard-Soulier Syndrome, children experience bruising, nose
bleeds and bleeding in the mouth and gums.
Women
may experience heavy or prolonged menstrual bleeding (menorrhagia)
and bleeding at the time of childbirth.
Blood
tests show:
- that
bleeding time is much longer than normal
- that
the platelets do not clump together at all (platelet aggregation
is absent).