International Journal of Hematology-Oncology and Stem Cell Research 2017. 11(1):13-18.

Conjugated Estrogen in Late-Onset Hemorrhagic Cystitis Associated with Hematopoietic Stem Cell Transplantation
Seyed Asadollah Mousavi, Vahid Moazed, Niayesh Mohebbi, Molouk Hadjibabaie, Kamran Alimoghaddam, Babak Bahar, Mohammad Jahani, Ardeshir Ghavamzadeh


Background: Hemorrhagic cystitis (HC) is one of the most challenging complications in hematopoietic stem cell transplantation (HSCT). Estrogen is one of the suggested treatments for controlling this problem.

Subjects and Methods: We performed a randomized case-control study to evaluate the efficacy of oral conjugated estrogen on HC management in 56 HSCT patients. Patients were randomly assigned to the drug group (received 6.25 mg conjugated estrogen oral tablets in a daily single dose during hematuria period) or control group.

Result: The median time to complete response was 36 and 24 days in the drug and control group, respectively. The median time of down stage was 24 days in the drug group and 12 days in control group. Adjusted for HC grades, the relative risk of complete response for patients in control group was 1.613 times more than that of patients in drug group; nevertheless, not significant (p=0.122).

Conclusion: Our study did not show any benefit in use of oral conjugated estrogen in the management of HC.


Conjugated estrogen; Late-onset hemorrhagic cystitis; Hematopoietic stem cell transplantation

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