Patients enrolled in the McMaster ITP Registry (2010-2016)
| Diagnosis (at last follow-up) . | No. of patients . |
|---|---|
| ITP | 362 |
| Primary ITP | 269 |
| Secondary ITP | 93 |
| Evan's syndrome | 14 |
| Systemic lupus erythematosus | 13 |
| Drug-induced ITP | 9 |
| Antiphospholipid antibody syndrome | 6 |
| Helicobacter pylori | 7 |
| Hepatitis C | 6 |
| ITP in pregnancy | 8 |
| Common variable immune deficiency | 4 |
| HIV | 3 |
| ITP following nonspecific viral illness or infection | 4 |
| Chronic lymphocytic leukemia | 2 |
| Lymphoproliferative disease | 2 |
| Other associated autoimmune conditions | 15 |
| Nonimmune thrombocytopenia | 149 |
| Familial thrombocytopenia (suspected or confirmed) | 35 |
| Splenomegaly | 27 |
| Incidental thrombocytopenia of pregnancy | 20 |
| Myelodysplastic syndrome | 20 |
| Liver disease | 16 |
| Pseudothrombocytopenia | 13 |
| Alcohol-related thrombocytopenia | 6 |
| Pancytopenia | 2 |
| Thrombocytopenia associated with malignancy | 1 |
| Other | 9 |
| Isolated mild thrombocytopenia (100-150 × 109/L) | 67 |
| Other immune platelet disorders | 23 |
| Thrombotic microangiopathy | 19 |
| Cyclic thrombocytopenia | 4 |
| Unknown | 13 |
| Total | 614 |
| Diagnosis (at last follow-up) . | No. of patients . |
|---|---|
| ITP | 362 |
| Primary ITP | 269 |
| Secondary ITP | 93 |
| Evan's syndrome | 14 |
| Systemic lupus erythematosus | 13 |
| Drug-induced ITP | 9 |
| Antiphospholipid antibody syndrome | 6 |
| Helicobacter pylori | 7 |
| Hepatitis C | 6 |
| ITP in pregnancy | 8 |
| Common variable immune deficiency | 4 |
| HIV | 3 |
| ITP following nonspecific viral illness or infection | 4 |
| Chronic lymphocytic leukemia | 2 |
| Lymphoproliferative disease | 2 |
| Other associated autoimmune conditions | 15 |
| Nonimmune thrombocytopenia | 149 |
| Familial thrombocytopenia (suspected or confirmed) | 35 |
| Splenomegaly | 27 |
| Incidental thrombocytopenia of pregnancy | 20 |
| Myelodysplastic syndrome | 20 |
| Liver disease | 16 |
| Pseudothrombocytopenia | 13 |
| Alcohol-related thrombocytopenia | 6 |
| Pancytopenia | 2 |
| Thrombocytopenia associated with malignancy | 1 |
| Other | 9 |
| Isolated mild thrombocytopenia (100-150 × 109/L) | 67 |
| Other immune platelet disorders | 23 |
| Thrombotic microangiopathy | 19 |
| Cyclic thrombocytopenia | 4 |
| Unknown | 13 |
| Total | 614 |