A Study to Evaluate Lanraplenib (LANRA) in Combination With Gilteritinib in Participants With FLT3-mutated Relapsed or Refractory Acute Myeloid Leukemia (AML)
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ClinicalTrials.gov Identifier: NCT05028751 |
Recruitment Status :
Recruiting
First Posted : August 31, 2021
Last Update Posted : May 18, 2023
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Condition or disease | Intervention/treatment | Phase |
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Acute Myeloid Leukemia Relapsed Acute Myeloid Leukemia Refractory Acute Myeloid Leukemia | Drug: Lanraplenib Drug: Gilteritinib | Phase 1 Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 55 participants |
Allocation: | Non-Randomized |
Intervention Model: | Sequential Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | A Phase 1b/2 Study of the Safety, Pharmacokinetics, Pharmacodynamics, and Preliminary Efficacy of the Selective SYK Inhibitor Lanraplenib (LANRA) in Combination With the FLT3 Inhibitor Gilteritinib, in Patients With FLT3-mutated Relapsed or Refractory AML |
Actual Study Start Date : | August 5, 2022 |
Estimated Primary Completion Date : | November 2023 |
Estimated Study Completion Date : | October 2024 |

Arm | Intervention/treatment |
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Experimental: Part 1: Dose Escalation
Sequential cohorts of participants will receive escalating doses of lanraplenib (LANRA) once daily (QD) + gilteritinib QD in each 28 day cycle for determination of the maximally tolerated dose (MTD) / recommended Phase 2 dose (RP2D) of LANRA in combination with gilteritinib.
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Drug: Lanraplenib
Orally via tablets
Other Name: LANRA Drug: Gilteritinib Orally via tablets
Other Name: XOSPATA® |
Experimental: Part 2: Expansion Cohort
Following identification of the maximally tolerated dose (MTD) / recommended Phase 2 dose (RP2D) of lanraplenib (LANRA) in combination with gilteritinib in Part 1, an expansion cohort will enroll. The expansion cohort will receive LANRA in combination with gilteritinib at the MTD / RP2D once daily (QD) in each 28 day cycle.
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Drug: Lanraplenib
Orally via tablets
Other Name: LANRA Drug: Gilteritinib Orally via tablets
Other Name: XOSPATA® |
- Part 1 and Part 2: Number of Participants who Experience a Treatment-Emergent Adverse Event (TEAE) [ Time Frame: Cycle 1 Day 1 through 30 days after last dose (up to approximately 5 years; cycle is 28 days) ]
- Part 1 and Part 2: Number of Participants who Experience a Dose-Limiting Toxicity (DLT) for Lanraplenib (LANRA) [ Time Frame: Cycle 1 Day 1 through pre-dose Cycle 2 Day 1 (cycle is 28 days) ]
- Part 1: Maximally Tolerated Dose (MTD) of Lanraplenib (LANRA) [ Time Frame: Cycle 1 Day 1 through Cycle 2 Day 1 (cycle is 28 days) ]
- Part 1: Recommended Phase 2 Dose (RP2D) of Lanraplenib (LANRA) [ Time Frame: Cycle 1 Day 1 through Cycle 2 Day 1 (cycle is 28 days) ]
- Part 1: Maximal Plasma Concentration (Cmax) of Lanraplenib (LANRA) [ Time Frame: Cycle 1 Day 1 through Cycle 2 Day 1 (cycle is 28 days) ]
- Part 1: Time to Maximal Plasma Concentration (Tmax) of Lanraplenib (LANRA) [ Time Frame: Cycle 1 Day 1 through Cycle 2 Day 1 (cycle is 28 days) ]
- Part 1: Area Under the Plasma Concentration x Time Curve from Hour 0 to the Last Measurable Time Point (AUC0-last) of Lanraplenib (LANRA) [ Time Frame: Cycle 1 Day 1 through Cycle 2 Day 1 (cycle is 28 days) ]
- Part 1 and Part 2: Composite Complete Response (CR) Rate [ Time Frame: Up to 5 years ]
- Part 1 and Part 2: Composite Complete Response (CR) with Partial Hematologic Recovery (CRh) [ Time Frame: Up to 5 years ]
- Part 1 and Part 2: Duration of Response (DoR) [ Time Frame: Up to 5 years ]
- Part 1 and Part 2: Event Free Survival (EFS) [ Time Frame: Up to 5 years ]
- Part 1 and Part 2: Overall Survival (OS) [ Time Frame: Up to 5 years ]

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Adults ≥18 years of age with acute myeloid leukemia (AML) and at least 1 prior line of therapy
- FMS-like tyrosine kinase 3 (FLT3)-mutated disease documented in a local reference laboratory
- Have the ability to understand the requirements and procedures of the study and sign a written informed consent form
- Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0, 1 or 2
- Adequate hepatic and renal function
- Prothrombin time (PT), activated partial thromboplastin time (aPTT) and international normalized ratio (INR) ≤1.5x upper limit of normal (ULN) unless receiving therapeutic anticoagulation
- Negative serum ß-human chorionic gonadotropin (HCG) test in women of child-bearing potential (WOCBP)
- Left ventricular ejection fraction ≥50% confirmed by echocardiogram (ECHO) or multi-gated acquisition (MUGA) scan
Exclusion Criteria:
- Known central nervous system (CNS) involvement with leukemia
- Clinical signs/symptoms of leukostasis that have failed therapy including hydroxyurea and/or leukapheresis of at least 3 days duration
- Pregnant or breastfeeding women
- Active infection with hepatitis B, C or human immunodeficiency virus (HIV) infection
- Disseminated intravascular coagulation with active bleeding or signs of thrombosis
- Known active coronavirus disease 2019 (COVID-19)
- Administration of a live attenuated virus vaccine within 35 days before Cycle 1 Day 1 (C1D1)
- History of non-myeloid malignancy except for the following: adequately treated localized basal cell or squamous cell carcinoma of the skin; cervical carcinoma in situ; superficial bladder cancer; asymptomatic prostate cancer without known metastatic disease, with no requirement for therapy or requiring only hormonal therapy and with normal prostate specific antigen for > 1 year prior to start of study therapy; or any other cancer that has been in complete remission without treatment for ≥3 years prior to enrollment
- Clinically significant heart disease
- Prolongation of the congenital long measure between Q wave and T wave in the electrocardiogram (QT) interval at baseline
- Evidence of ongoing uncontrolled systemic bacterial, fungal, or viral infection at the time of study treatment initiation
- Current (within 30 days of study enrollment) drug-induced liver injury, chronic active hepatitis, alcoholic liver disease, nonalcoholic steatohepatitis, primary biliary cholangitis with inadequate response to ursodeoxycholic acid or other health authority approved therapy, extrahepatic obstruction caused by cholelithiasis, cirrhosis of the liver, orportal hypertension
- Ongoing (within 6 weeks of study enrollment) hepatic encephalopathy
- Ongoing immunosuppressive therapy, including systemic chemotherapy for treatment of leukemia

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05028751
Contact: Director of Clinical Operations | 650-484-1583 | clinicaltrials@kronosbio.com |
United States, California | |
University of California Los Angeles (UCLA) | Recruiting |
Los Angeles, California, United States, 990095 | |
Contact: Bruck Habtemariam 310-794-0242 bhabtemariam@mednet.ucla.edu | |
United States, Georgia | |
The Blood and Marrow Transplant Group of Georgia | Recruiting |
Atlanta, Georgia, United States, 30342 | |
Contact: Lawrence Morris, M.D. 404-255-1930 lemorris@bmtga.com | |
United States, Illinois | |
University of Chicago Medical Center | Recruiting |
Chicago, Illinois, United States, 60637 | |
Contact: Anand Patel, M.D. 773-834-8206 anand.patel@uchospitals.edu | |
United States, New York | |
Memorial Sloan Kettering Cancer Center | Recruiting |
New York, New York, United States, 10065 | |
Contact: Eytan Stein, M.D. 212-639-3314 steine@mskcc.org | |
United States, Oregon | |
Oregon Health and Science University | Recruiting |
Portland, Oregon, United States, 97239 | |
Contact: Ronan Swords, M.D. 503-494-9014 swords@ohsu.edu | |
United States, Texas | |
Texas Oncology - Baylor Charles A. Sammons Cancer Center | Completed |
Dallas, Texas, United States, 75246 | |
University of Texas MD Anderson Cancer Center | Not yet recruiting |
Houston, Texas, United States, 77030 | |
Contact: Naval G. Daver, MD 713-794-4392 ndaver@mdanderson.org | |
United States, Wisconsin | |
Froedtert Hospital | Recruiting |
Milwaukee, Wisconsin, United States, 53226 | |
Contact: Althea Thomas, RN 414-805-2588 athomas@mcw.edu | |
Spain | |
Hospital Universitario 12 de Octubre | Not yet recruiting |
Madrid, Avenida De Córdoba Sin Número, Spain, 28041 | |
Contact: Dr. Maria Calbacho Robles +34 913 908 678 mcalbachorobles@gmail.com | |
MD Anderson Cancer Center Madrid | Recruiting |
Madrid, Calle De Arturo Soria, Spain, 270 | |
Contact: Dr. Adolfo de la Fuente Burguera +34 917 878 631 afuente@mdanderson.es | |
Hospital Universitari Vall d'Hebrón | Recruiting |
Barcelona, Spain, 08035 | |
Institut Català d'Oncologia - Hospital Duran i Reynals (ICO L'Hospitalet) | Recruiting |
Barcelona, Spain, 08908 | |
Contact: Dra. Montserrat Arnán +34 932607750 contactfortrialsICOLH@iconcologia.net | |
Hospital Clínic de Barcelona | Recruiting |
Barcelona, Spain, 170 | |
Contact: Alejandro Pardines +34 932275400 ext 4353 PARDINES@recerca.clinic.ca | |
Hospital San Pedro de Alcantara | Recruiting |
Cáceres, Spain, 10001 | |
Contact: Juan Miguel Bergua Burgues jmberguaburg@gmail.com | |
Hospital Universitario Fundación Jiménez Díaz | Recruiting |
Madrid, Spain, 28040 | |
Contact: Juan Manuel Alonso Dominguez +34 915 504 800 ext 2673 juan.adominguez@fjd.es | |
Hospital Universitari i Politècnic La Fe | Not yet recruiting |
Valencia, Spain, 46026 | |
Contact: Dr. Pau Montesinos Fernández +34 96 1244925 montesinos_pau@gva.es |
Responsible Party: | Kronos Bio |
ClinicalTrials.gov Identifier: | NCT05028751 |
Other Study ID Numbers: |
KB-LANRA- 1001 2022-001279-15 ( EudraCT Number ) |
First Posted: | August 31, 2021 Key Record Dates |
Last Update Posted: | May 18, 2023 |
Last Verified: | May 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Acute Myeloid Leukemia Lanraplenib LANRA Relapsed Acute Myeloid Leukemia Refractory Acute Myeloid Leukemia |
Leukemia Leukemia, Myeloid Leukemia, Myeloid, Acute Neoplasms by Histologic Type Neoplasms |