Retrospective & Prospective Observational Study of Patients With Immune (Idiopathic) Thrombocytopenic Purpura (ITP)

A Prospective Observational Descriptive Study and Retrospective Chart Review of Subjects With Immune (Idiopathic) Thrombocytopenic Purpura (ITP)

This is a multi-center prospective observational descriptive study complemented by a retrospective chart review. Patients diagnosed with ITP and currently treated for ITP by a hematologist or hematologist-oncologist will be recruited from community-based clinics and academic/referral centers. They will be followed prospectively for a period of 12 months. At inception, participants' charts will also be reviewed from the date of enrollment retrospectively to the date of diagnosis or the previous 36 months, whichever is less.

Time Perspective: 12 months prospective chart review study with a retrospective chart review for a period up to 36 months from the start of the study, since the date of diagnosis for ITP.

Inclusion Criteria:

• Has a diagnosis of ITP according to the American Society of Hematology guidelines (George et al., 1996).
• Is equal to or greater than 18 years of age.
• Is willing and able to complete a series of questionnaires.
• Before any study-specific procedure, the appropriate written informed consent must be obtained.

Exclusion Criteria:

• Participated in clinical trial(s) during the past 36 months.
• Is considering participation in a clinical trial within the next 12 months.