Immune Thrombocytopenic Purpura (ITP) is a type of autoimmune bleeding disorder. It occurs because of a reduction in cells that normally cause the blood to clot. Sometimes, ITP occurs after an infection, especially in children.1

Normally, your immune system protects you from foreign viruses and bacteria. In contrast, in the case of ITP, your immune cells mistakenly attack blood cells called platelets, which causes a decline of platelets in the blood—leading to abnormal bruising or bleeding.

Some symptoms of ITP that may occur include2:

  • Bruising on the skin or gums
  • Bleeding from the mouth, gums or intestinal tract
  • Red dots on the skin
  • Nose bleeds
  • Blood in the urine
  • Heavy periods

ITP can go away in a few months or last up to one year or longer.

Fortunately, WinRho® SDF, [Rho(D) Immune Globulin Intravenous (Human)], has been used to treat ITP for nearly 20 years.

If you have any questions regarding the use of WinRho SDF, contact your physician.

References: 1. Cines DB, Blanchette VS. Immune thrombocytopenic purpura. N Engl J Med 2002;246:995-1008. 2. Scaradavou A, Bussel JB. Clinical experience with anti-D in the treatment of idiopathic thrombocytopenic purpura. Sem Hematol. 1998:35:52-57.

Important Safety Information

WARNING: INTRAVASCULAR HEMOLYSIS (IVH)

Intravascular hemolysis leading to death has been reported in patients treated for ITP with WinRho® SDF.

IVH can lead to clinically compromising anemia and multi-system organ failure including acute respiratory distress syndrome (ARDS).

Serious complications including severe anemia, acute renal insufficiency, renal failure, and disseminated intravascular coagulation (DIC) have also been reported.

Closely monitor patients treated with WinRho® SDF for ITP in a healthcare setting for at least eight hours after administration. Perform a dipstick urinalysis to monitor for hematuria and hemoglobinuria at baseline and 2 hours, 4 hours, and prior to the end of the monitoring period. Alert patients and monitor the signs and symptoms of IVH including back pain, shaking chills, fever, and discolored urine or hematuria. Absence of these signs and/or symptoms of IVH within eight hours does not indicate IVH cannot occur subsequently. If signs and/or symptoms of IVH are present or suspected after WinRho® SDF administration, post-treatment laboratory tests should be performed including plasma hemoglobin, haptoglobin, LDH, and plasma bilirubin (direct and indirect).

INDICATION

WinRho® SDF is a Rho(D) Immune Globulin Intravenous (Human) product indicated for use in clinical situations requiring an increase in platelet count to prevent excessive hemorrhage in the treatment of non-splenectomized, Rho(D)-positive:

  • Children with chronic or acute immune thrombocytopenia (ITP)
  • Adults with chronic ITP
  • Children and adults with ITP secondary to HIV infection

The safety and efficacy of WinRho® SDF have not been evaluated in clinical trials for patients with non-ITP causes of thrombocytopenia or in previously splenectomized patients or in patients who are Rho(D)-negative.

Important Safety Information

For use in the treatment of ITP, do not use WinRho® SDF in:

  • Patients who have had known anaphylactic or severe systemic reaction to the administration of human immune globulin products
  • IgA deficient patients with antibodies to IgA and a history of hypersensitivity
  • Patients with autoimmune hemolytic anemia, with pre-existing hemolysis or at high risk for hemolysis

The liquid formulation of WinRho® SDF contains maltose. Maltose in IGIV products has been shown to give falsely high blood glucose levels in certain types of blood glucose testing systems. Due to the potential for falsely elevated glucose readings, only testing systems that are glucose-specific should be used to test or monitor blood glucose levels in patients receiving WinRho® SDF Liquid.

WinRho® SDF is made from human plasma. It may carry a risk of transmitting infectious agents, e.g. viruses, and theoretically, the Creutzfeldt-Jakob disease (CJD) agent.

The safety and efficacy of WinRho® SDF have not been evaluated in clinical trials for patients with non-ITP causes of thrombocytopenia or in previously splenectomized patients or in patients who are Rho(D)-negative.

Acute renal dysfunction/failure, osmotic nephropathy, and death may occur upon use of Immune Globulin Intravenous (IGIV) products, including WinRho® SDF. Ensure that patients are not volume depleted before administering WinRho® SDF. For patients at risk of renal dysfunction or failure, including those with any degree of pre‑existing renal insufficiency, diabetes mellitus, advanced age (above 65 years of age), volume depletion, sepsis, paraproteinemia, or receiving known nephrotoxic drugs, administer WinRho® SDF at the minimum infusion rate practicable.

In Rho(D)-positive patients with ITP, side effects related to the destruction of Rho(D)-positive red blood cells, most notably decreased hemoglobin, can be expected. In most cases, the red blood cell destruction is believed to occur in the spleen.

Thrombotic events may occur following treatment with WinRho® SDF and other IGIV products.

Noncardiogenic pulmonary edema [Transfusion-related Acute Lung Injury (TRALI)] may occur in patients following IGIV treatment.

General adverse reactions associated with the use of WinRho® SDF include body weakness, abdominal or back pain, low blood pressure, paleness, diarrhea, abnormal blood work, joint pain, muscle pain, dizziness, abnormal movement, sleepiness, itchiness, rash, and sweating. In the treatment of ITP, the most common adverse events (≤2% of infusions) were headache, chills, and fever.

Please see full Prescribing Information for complete prescribing details.