Modified Post-Transplant Cyclophosphamide Regimen for Children With Juvenile Myelomonocytic Leukemia

Hematopoietic System--Cancer Clinical Trial

Official title:

Modified Post-Transplant Cyclophosphamide Combined With DCAG as a Bridge Followed by Busulfan, Fludarabine and Melphalan Based Conditioning Regimen for Children With Juvenile Myelomonocytic Leukemia

Clinical Trial Details — Status: Enrolling by invitation

Administrative data

• NCT number: NCT03687463
• Other study ID #: CIP-2015-JMML
• Status: Enrolling by invitation
• Start date: April 10, 2015
• Est. completion date: April 10, 2020

Study information

• Verified date: September 2018
• Source: Capital Research Institute of Pediatrics
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational [Patient Registry]

Clinical Trial Summary

Hematopoietic stem cell transplantation (HSCT) is the only curative option for most of juvenile myelomonocytic leukemia (JMML). However, relapse after HSCT severely influence the long-term overall survival (OS). Researches demonstrate that these malignant myeloid disorders is a particular responsiveness to epigenetic therapy with the DNA-hypomethylating agents decitabine. However, hypomethylating therapy does not eradicate the malignant clone in JMML and an emerging concept with intriguing potential is the combination of hypomethylating therapy and HSCT. Graft-versus-host disease (GVHD) is major complication after HSCT as a threshold of the quality of patient life. Many data indicate that post -transplant cyclophosphamide (PT/Cy) is an effective method to control the occurrence of GVHD.

Description:

Hematopoietic stem cell transplantation (HSCT) is the only curative option for most of juvenile myelomonocytic leukemia (JMML). However, persistent disease statute and relapse after HSCT severely influence the long-term overall survival (OS). Researches demonstrate that JMML is an aggressive myeloproliferative neoplasm occurring in young children. The common denominator of these malignant myeloid disorders is a particular responsiveness to epigenetic therapy with the DNA-hypomethylating agents 5-azacytidine (azacitidine) or decitabine. However, hypomethylating therapy does not eradicate the malignant clone in JMML and an emerging concept with intriguing potential is the combination of hypomethylating therapy and HSCT. Graft-versus-host disease (GVHD) is severe complication after HSCT. Post -transplant cyclophosphamide (PT/Cy) is an effective method to control the occurrence of GVHD. Based on these encouraging results, investigators launched a noval method for patients diagnosed as JMML and treated in our institution. They modified PT/Cy conditioning regimens. Patients all subsequently received modified DCAG regimen as the induction chemotherapy including decitabine of 20 mg/m2 intravenously over 4 h for five consecutive days (Day -15 to -11) followed by cytarabine of 10 mg/m2 q12 h for 7 days (Day -15 to -9), aclarubicin of 10 mg/day for 4 days (Day -12 to -9), and G-CSF 5µg/kg per day for priming until white blood count was >20 x109/L and immediately followed by myeloablative conditioning regimen (MAC) consisted with thymoglobulin (2.5mg/kg/day) which was administered for 3 days （Day -8 to -6), iv Bu (4 mg/kg in divided doses daily for 4 days) on days -5, -4, -3, and -2, iv Flu (30 mg/m2 once daily for 4 days, total dose 120 mg/m2) on days −5, -4, -3, and -2 and iv Melphlan (70 mg/m2 once daily for 3 days, total dose210 mg/m2) was performed on days -4 and -2.

Recruitment information / eligibility

• Status: Enrolling by invitation
• Enrollment: 6
• Est. completion date: April 10, 2020
• Est. primary completion date: July 10, 2018
• Gender: All
• Age group: 1 Year to 18 Years

Eligibility

Inclusion Criteria:

• JMML patients diagnosed in our center and with the indications of transplant without the suitable donor.

Exclusion Criteria:

• JMML patients do not need to transplant.

Related Conditions & MeSH terms

• Hematopoietic System--Cancer
• Leukemia, Myelomonocytic, Acute
• Leukemia, Myelomonocytic, Chronic
• Leukemia, Myelomonocytic, Juvenile

Intervention

Drug:
• Decitabine
Decitabine for injection

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
Capital Research Institute of Pediatrics

References & Publications (4)

Dvorak CC, Satwani P, Stieglitz E, Cairo MS, Dang H, Pei Q, Gao Y, Wall D, Mazor T, Olshen AB, Parker JS, Kahwash S, Hirsch B, Raimondi S, Patel N, Skeens M, Cooper T, Mehta PA, Grupp SA, Loh ML. Disease burden and conditioning regimens in ASCT1221, a ran — View Citation

Flotho C, Sommer S, Lübbert M. DNA-hypomethylating agents as epigenetic therapy before and after allogeneic hematopoietic stem cell transplantation in myelodysplastic syndromes and juvenile myelomonocytic leukemia. Semin Cancer Biol. 2018 Aug;51:68-79. do — View Citation

Locatelli F, Niemeyer CM. How I treat juvenile myelomonocytic leukemia. Blood. 2015 Feb 12;125(7):1083-90. doi: 10.1182/blood-2014-08-550483. Epub 2015 Jan 6. Review. — View Citation

Zaucha-Prazmo A, Gozdzik J, Debski R, Drabko K, Sadurska E, Kowalczyk JR. Transplant-related mortality and survival in children with malignancies treated with allogeneic hematopoietic stem cell transplantation. A multicenter analysis. Pediatr Transplant. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	disease statue	Disease status can be measured by test the of (minimal residual disease) MRD, MRD<0,01% as negative. The quantitative of gene mutation is "0" as negative.	one months