Sirolimus Versus Sirolimus Plus Prednisolone for Kaposiform Hemangioendothelioma

Kaposiform hemangioendothelioma (KHE) is a rare vascular neoplasm that occurs predominantly in infancy or early childhood. KHE has a nearly equal sex ratio. The annual incidence of KHE has been estimated at 0.071 per 100,000 children. KHE presents with intermediate-malignant and locally aggressive characteristics but without distant metastases. This pilot trial studies sirolimus versus sirolimus plus pednisolone in treating patients diagnosed with kaposiform hemangioendothelioma (KHE) and Kasabach-Merritt phenomemon (KMP) that cannot be removed by surgery. The purpose of this study is to compare the efficacy and safety of orally administered sirolimus versus sirolimus plus pednisolone in the treatment of KHE associated with KMP.

Sex

All

Minimum age

1 Day

Maximum age

18 Years

Inclusion Criteria:

* Presenting a KHE with the following characteristics:

  1. Clinical features and histological findings consistent with progressive, non-resectable KHE associated with KMP.
  2. Patients must be 0 - 18 years of age at the time of study entry.
  3. Without functional impairment requiring treatment of corticosteroid.
* Organ function requirements:

  1 Adequate liver function:
  1. Total bilirubin less than or equal to 1.5 x upper limit of normal (ULN)for age, and
  2. ALT and AST less than or equal to 2.5 x upper limit normal (ULN) for age.

  2 Adequate renal function:
  1. 0-5 years of age maximum serum creatinine (mg/dL) of 0.8
  2. 6-10 years of age maximum serum creatinine (mg/dL) of 1.0
  3. 11-15 years of age maximum serum creatinine (mg/dL) of 1.2
  4. 16-18 years of age maximum serum creatinine (mg/dL) of 1.5
* Adequate bone marrow function: Absolute Neutrophil Count (ANC) greater than or equal to 1 x 10 to the ninth/Liter.
* Consent of parents (or the person having parental authority in families): Signed and dated written informed consent.

Exclusion Criteria:

* Allergy to sirolimus or other rapamycin analogues.
* Any known evidence of significant local or systemic uncontrolled infection, defined as receiving intravenous antibiotics at the time of randomization.
* Patients must not be known to be Human Immunodeficiency Virus positive or known immunodeficiency. Testing is not required unless a condition is suspected.
* Other concurrent severe and/or uncontrolled medical disease which could compromise participation in the study (e.g. uncontrolled diabetes, uncontrolled hypertension, severe malnutrition, chronic liver or renal disease, active upper gastrointestinal tract ulceration).
* Impairment of gastrointestinal function or chronic gastrointestinal disease that may significantly alter the absorption of sirolimus.
* Patients who have a history of malignancy.
* Patients with an inability to participate or to follow the study treatment and assessment plan.

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• BACKGROUNDWang C, Li Y, Xiang B, Li F, Chen S, Li L, Ji Y. Successful Management of Pancreatic Kaposiform Hemangioendothelioma With Sirolimus: Case Report and Literature Review. Pancreas. 2017 May/Jun;46(5):e39-e41. doi: 10.1097/MPA.0000000000000801. No abstract available. PMID 28426496
• BACKGROUNDReichel A, Hamm H, Wiegering V, Wiewrodt B, Neubauer H, Ernestus K, Winkler B. Kaposiform hemangioendothelioma with Kasabach-Merritt syndrome: successful treatment with sirolimus. J Dtsch Dermatol Ges. 2017 Mar;15(3):329-331. doi: 10.1111/ddg.12987. Epub 2017 Feb 21. No abstract available. PMID 28220608
• BACKGROUNDAlaqeel AM, Alfurayh NA, Alhedyani AA, Alajlan SM. Sirolimus for treatment of kaposiform hemangioendothelioma associated with Kasabach-Merritt phenomenon. JAAD Case Rep. 2016 Dec 5;2(6):457-461. doi: 10.1016/j.jdcr.2016.06.005. eCollection 2016 Nov. No abstract available. PMID 27981218
• BACKGROUNDMahajan P, Margolin J, Iacobas I. Kasabach-Merritt Phenomenon: Classic Presentation and Management Options. Clin Med Insights Blood Disord. 2017 Mar 16;10:1179545X17699849. doi: 10.1177/1179545X17699849. eCollection 2017. PMID 28579853
• DERIVEDJi Y, Chen S, Zhou J, Yang K, Zhang X, Xiang B, Qiu T, Gong X, Zhang Z, Lan Y, Hu F, Kong F, Qiu Q, Zhang Y. Sirolimus plus prednisolone vs sirolimus monotherapy for kaposiform hemangioendothelioma: a randomized clinical trial. Blood. 2022 Mar 17;139(11):1619-1630. doi: 10.1182/blood.2021014027. PMID 35030255