Myeloid Malignancy study: GTB-360
Official title HM2023-05: GTB-3650 Trike for High Risk MDS and R/R AML
ClinicalTrials.gov ID: NCT06594445
What this study is testing
What is GTB-360?
This is an investigational medicine being studied as a potential treatment for certain types of blood cancers called myeloid malignancies. It is designed to help natural killer cells find and attack cancer cells that have a specific marker called CD33.
Also referred to as anti-CD16/IL-15/anti-CD33.
Plain-language explanation of the investigational treatment. It is being studied and is not an approved or proven therapy. The study team can confirm the details.
- What it's testing
- The study wants to see if GTB‑3650 can activate natural killer cells to attack cancer cells that express CD33 and reduce immune suppression in the bone marrow.
- Who it's for
- Adults 18 or older with CD33‑positive myelodysplastic syndrome or relapsed acute myeloid leukemia who are not candidates for curative treatments like stem‑cell transplant and have no other effective options.
- What's involved
- Participants will receive the drug in a controlled setting, with regular blood tests and monitoring visits to check safety and how the drug works.
- Time commitment
- The trial lasts several weeks to months, with scheduled clinic visits and blood draws as directed by the study team.
- Phase 1: an early, usually small safety study
A plain-language read of the study's public ClinicalTrials.gov listing. The study team confirms the details.
Who can take part
Ages 18 and older
You may be able to join if
- Diagnosis of a high risk myelodysplastic syndromes (MDS), treatment related MDS, OR relapsed/refractory acute myelogenous leukemia (AML).
- Absolute lymphocyte count (ALC) ≥ 200 cells/µL OR absolute circulating CD56+/CD3- NK cell count \>25 cells/µL within the 14 days prior to Cycle 1 Day...
- Peripheral blasts ≤20,000 at the time of treatment start. Hydroxyurea may be used up to Day 1 of the 1st cycle to achieve this threshold and...
- Karnofsky performance status ≥ 70%
- Adequate organ function within 14 days (30 days for cardiac) of Cycle 1 Day 1
You likely can't join if
- Pregnant or breast-feeding. The effect of GTB-3650 TriKE on the fetus is unknown.
- A candidate for hematopoietic stem cell transplant (HSCT) or newly relapsed after HSCT (e.g. no post-HSCT therapy given).
- Bi-phenotypic acute leukemia or mixed lineage leukemia.
- Acute promyelocytic leukemia (APL).
- No anticancer therapy within 14 days of Cycle 1 Day 1; any AEs from therapy given prior must have resolved to Grade 1 or baseline
- New or progressive pulmonary infiltrates on screening chest x-ray or chest CT scan unless cleared for study by Pulmonary.
See the full eligibility criteria
- Diagnosis of a high risk myelodysplastic syndromes (MDS), treatment related MDS, OR relapsed/refractory acute myelogenous leukemia (AML).
- Absolute lymphocyte count (ALC) ≥ 200 cells/µL OR absolute circulating CD56+/CD3- NK cell count \>25 cells/µL within the 14 days prior to Cycle 1 Day 1.
- Peripheral blasts ≤20,000 at the time of treatment start. Hydroxyurea may be used up to Day 1 of the 1st cycle to achieve this threshold and continued for the 1st two weeks of Cycle 1 to maintain it.
- Karnofsky performance status ≥ 70%
- Adequate organ function within 14 days (30 days for cardiac) of Cycle 1 Day 1
- Sexually active persons of childbearing potential or persons with partners of childbearing potential must agree to use a highly effective form of contraception during study treatment and for at least 4 months after the...
- Provides voluntary written consent prior to the performance of any research related activity.
- Pulmonary: room air 0 2 saturation at ≥ 95%
- Pregnant or breast-feeding. The effect of GTB-3650 TriKE on the fetus is unknown. Persons of childbearing potential must have a negative serum or urine test within 7 days prior to Cycle 1 Day 1 to rule out pregnancy.
- A candidate for hematopoietic stem cell transplant (HSCT) or newly relapsed after HSCT (e.g. no post-HSCT therapy given).
- Bi-phenotypic acute leukemia or mixed lineage leukemia.
- Acute promyelocytic leukemia (APL).
- No anticancer therapy within 14 days of Cycle 1 Day 1; any AEs from therapy given prior must have resolved to Grade 1 or baseline
- New or progressive pulmonary infiltrates on screening chest x-ray or chest CT scan unless cleared for study by Pulmonary.
- Active systemic infection requiring parenteral antibiotic therapy. Any prior systemic infections must have resolved following optimal therapy.
- Known history of HIV.
- Active Hepatitis B or Hepatitis C (virus detectable by PCR) - chronic asymptomatic viral hepatitis is allowed.
- Positive test results from chronic hepatitis B infection (defined as positive HBsAg serology) and/or positive test results for hepatitis C (HCV antibody serology test).
- Prior malignancy except for the following: adequately treated basal cell or squamous cell skin cancer, in situ cervical cancer, adequately treated Stage I or II cancer currently in complete remission, or any other...
- Active central nervous system (CNS) malignancy or symptoms of CNS spread or administration of IT chemotherapy within 14 days prior to Day 1.
- Extramedullary disease causing symptoms and/or involving the CNS or spinal canal - asymptomatic extramedullary disease outside the CNS and spinal canal is eligible provided the marrow has measurable disease.
- Known autoimmune disease requiring active treatment with steroids or other immunosuppressive medications within 14 days before Cycle 1 Day.
- Persons with a condition requiring systemic treatment with steroids (\> 10 mg daily prednisone equivalent) or other immunosuppressive medications within 14 days before Cycle 1 Day 1.
- QTc interval \> 480 msec at screening
- A family history of long QT syndrome
- Psychiatric illness/social situations that, in the judgement of the enrolling Investigator, would limit compliance with study requirements.
- Other illness or a medical issue that, in the judgement of the enrolling Investigator, would exclude the patient from participating in this study.
The study team makes the final eligibility decision.
Where it is enrolling
- Minneapolis, Minnesota, United States
Questions & answers
Do participants get paid in this trial?
This listing doesn't specify compensation. Many trials still reimburse travel or offer a stipend, so it's worth asking the study team when you connect.
Is it free to join, and do I need insurance?
Searching and applying through BridgeMD is free. In clinical trials the study-related treatment and visits are generally provided at no cost to you. You usually don't need insurance to take part, but confirm specifics with the study team.
How long does this study last?
The listing doesn't state an exact length. The study team walks you through the schedule and number of visits before you decide to enroll.
Who can join this trial?
This study is enrolling all sexes, 18 years and older. The study team makes the final eligibility decision.
Where is this trial taking place?
This study is enrolling now at Minneapolis, Minnesota, United States. Enter your location above to see the nearest enrolling site and check your eligibility.
Explore other conditions
BridgeMD is an information and trial-matching tool that is independent of the study sponsor. Details come from ClinicalTrials.gov. The study team decides eligibility, and your own doctor gives medical advice.