SNPMiner Trials by Shray Alag


SNPMiner Trials: Clinical Trial Report


Report for Clinical Trial NCT01641107

Developed by Shray Alag, 2019.
SNP Clinical Trial Gene

Front-line Treatment of Philadelphia Positive/BCR-ABL Positive Acute Lymphoblastic Leukemia With Ponatinib, a New Potent Tyrosine Kinase Inhibitor.

Drug resistance resulting from emergence of Imatinib-resistant BCR-ABL clones is a significant problem in Ph positive ALL patients because after a very good initial response to one TKI inhibitor, many patients relapse within one year, relapse being almost always associated with a BCR-ABL kinase domain point mutation. The patients who relapse after treatment with one TKI can be rescued to remission with another TKI, but the second remission is usually shorter than the previous one. A more potent TKI inhibitor, and pan-active not only on all the BCR-ABL variants (including the second generation TKI resistant T315I mutant), but also on others molecular targets can do better. In this context, Ponatinib is a novel synthetic orally active tyrosine kinase inhibitor (TKI), specifically developed to inhibit BCR-ABL, the fusion protein that is the product of the Philadelphia chromosome (Ph) in chronic myeloid leukemia (CML) and in a subset of acute lymphoblastic leukemia (Ph+ ALL). It potently inhibits the BCR-ABL protein as well as mutated forms of the protein that arise in patients resistant to prior therapies with TKIs. Ponatinib has been demonstrated to inhibit all the mutations that have been detected so far, in vitro and in vivo and to uniformly suppress the emerge of single-mutant clones in a mutagenesis assay. In the Phase II study, 41% of Philadelphia chromosome positive acute lymphoblastic leukemia patients treated with Ponatinib achieved major hematologic response, 47% had a major cytogenetic response, 38% obtained a complete cytogenetic response, showing that Ponatinib provides significant benefit despite previous intolerance or refractoriness to other TKIs. The Phase I trial showed that patients with a more recent diagnosis had increased rates of major molecular response: 79% for 14 patients with 0 to 5 years since diagnosis vs. 29% for 14 patients with more than 5 to 9 years since diagnosis (P=0.02) and 27% for 15 patients with more than 9 to 24 years since diagnosis (P=0.009). These characteristics support the hypothesis for a role of Ponatinib not only in patients resistant to prior TKI therapy but also in untreated ALL Ph+ patients, in order to prevent the emergence of resistant caused by the selection of mutated Ph+ clones and in order to avoid rapid progression of the disease.

NCT01641107 Philadelphia Positive BCR-ABL Positive Acute Lymphoblastic Leukemia
MeSH: Leukemia Precursor Cell Lymphoblastic Leukemia-Lymphoma Leukemia, Lymphoid
HPO: Leukemia Lymphoid leukemia

1 Interventions

Name: Ponatinib

Description: Treatment: Patients will receive daily oral administration of Ponatinib at a dose of 45 mg/day for 6 weeks (defined as one course) for 8 courses, same dose and schedule, for a total of 48 weeks. Each patient will be followed for the subsequent 24 months, every 3 month, providing survival information and monitoring serious adverse event. Each patient should be treated for a minimum of 6 weeks. Patients must be discontinued from the trial in the event of myocardial infarction or stroke, or for development or progression of arterial disease necessitating revascularization. Once a complete hematologic response has been achieved, with a platelet count ≥ 50x109/L, patients can be treated with aspirin and/or a statin as clinically indicated, at investigator discretion.

Type: Drug

Ponatinib


Primary Outcomes

Description: The primary endpoint is the proportion of patients who are in CHR at 6 months, calculated on the total number of patients who have been enroled and have received at least one dose of the first drug (prednisone).

Measure: Proportion of patients who are in Complete Hematological Response (CHR).

Time: At 6 months from study entry.

Secondary Outcomes

Description: CHR requires that all of the following are present: Bone marrow with less than 5% blast cells Peripheral blood differential without blasts PMN ≥ 1.5 x 109/L PLT ≥ 100 x 109/L No evidence of extramedullary involvement from leukemia

Measure: The rate of Complete Hematological Response (CHR).

Time: At 6, 12, 24, 36 and 48 weeks from study entry.

Description: CgR is defined based on the percentage of Ph pos metaphases, as evaluated by chromosome banding analysis (CBA) of at least 20 marrow cell metaphases: Complete (CCgR) if Ph pos 0 Partial (PCgR) if Ph pos 1-34% Minor (mCgR) if Ph pos 35-65% Minimal or none (min/none CgR) if Ph pos > 65% If only interphase FISH data are available, the response can be defined only as non-complete or complete - to be complete by FISH, it is required that less than 1% of nuclei (minimum number 200) have a positive signal.

Measure: The rate of complete Cytogenetic Response (CgR).

Time: At 6, 12, 24, 36 and 48 weeks from study entry.

Description: Duration of CCgR is measured by the date of the achievement of CCgR to the date of CCgR loss.

Measure: Duration of Complete Cytogenetic Response (CCgR).

Time: After four years from study entry.

Description: Molecular response is classified as: • Complete if by RT-Q-PCR the BCR-ABL: ABL ratio is below 0.01, with a sensitivity of at least 30,000 molecules of ABL.

Measure: The rate of Complete Molecular Response (CMoIR).

Time: At 12, 24, 36 and 48 weeks from study entry.

Description: Molecular response (MR) is classified as: • Major (MMolR) if by RT-Q-PCR the BCR-ABL: ABL ratio is lower than 0.10, with a sensitivity of at least 30,000 molecules of ABL.

Measure: The rate of major molecular response.

Time: At 12, 24, 36 and 48 weeks from study entry.

Description: Duration of CMR is measured by the date of the achievement of CMR to the date of CMR loss.

Measure: Duration of Complete molecular response (CMR).

Time: After four years from study entry.

Measure: Type and number of BCR-ABL kinase domain mutations.

Time: At the end of the study. At four years after enrollment of first patient.

Measure: Percentage of relationships between the response and the biomarkers.

Time: At six months from study entry.

Description: Events are induction failure, relapse and death whichever comes first.

Measure: Event Free Survival.

Time: After four years from study entry.

Description: Overall survival is measured in all patients from the data of enrolment to the date of death, by any causes.

Measure: Overall survival

Time: At the end of study. After four years from enrolment.

Measure: Failure Free Survival

Time: After four years from study entry.

Measure: Rate of Rate of side effects, adverse events and serious adverse events.

Time: After four years from study entry.

Purpose: Treatment

Single Group Assignment


There is one SNP

SNPs


1 T315I

A more potent TKI inhibitor, and pan-active not only on all the BCR-ABL variants (including the second generation TKI resistant T315I mutant), but also on others molecular targets can do better. --- T315I ---



HPO Nodes


HPO:
Leukemia
Genes 125
MPL RNASEH2B KRAS NPM1 TET2 MYD88 TSR2 RPL26 RPL27 TREX1 EFL1 PIGL SCN11A FLT3 PMS2 RPL35A EVC2 ABL1 CEBPA RARA NRAS WAS WIPF1 ATRX SH2B3 PDGFRA RB1 RNASEH2A PDGFRB CALR ARHGAP26 SH3GL1 RPS7 RPS10 NUMA1 GATA1 GATA2 RPS15A APC NSD1 ETV6 TCIRG1 DNAJC21 EVC SRP54 RPS17 NBN RPS19 SAMHD1 MSH2 RPS24 NUP214 RPS26 RPS27 RPS28 RPS29 MLLT10 RUNX1 XRCC4 CBFB CBL BCR ADAR TRIP13 ADA2 NSUN2 CREBBP PICALM GFI1 F13A1 F13B FANCA FANCC BLM FANCD2 FANCE NUTM1 JAK2 IFIH1 TYROBP MSH6 FANCG LIG4 PTPN11 SAMD9L THPO NF1 STS PIGA BRCA2 DYNC2LI1 PIK3CA SBDS GLI1 PIK3R1 BRD4 SETBP1 RNASEH2C LPP BUB1 BUB1B SCN9A SCN10A TREM2 MLF1 MLH1 ELANE DKC1 ATM HAX1 RPL35 GNB1 BUB3 CEP57 TAL1 KIT TAL2 RPL5 EP300 TP53 RPL11 KIF11 RPL15 DNMT3A RPL18
Lymphoid leukemia