Approval Probability
TA Base Rate
Adjusted LOA
ML Risk
Phase I: XB2001 · 1 trial · 1 indication
The primary objective of the Phase I portion is to identify the MTD of XB2001 when administered in combination with ONIVYDE + LV + 5-FU. The MTD is defined as the highest dose level at which no more than one out of six subjects experience a DLT. If two or more subjects in a cohort of six experience a DLT, the MTD is considered exceeded, and the previous lower dose level will be identified as the MTD. If no DLTs are observed at the highest dose level studied, that dose will be used for Phase II. A DLT is defined as any Grade 3-4 adverse event (per NCI CTCAE v5.0) occurring within the first 28 days that is deemed possibly related to the combination regimen, unless the toxicity is clearly attributable to a single non-XB2001 component. Specific DLT criteria include: 1. Inability to deliver all scheduled doses during the 28-day window due to unexpected drug-related toxicity. 2. Inability to deliver the intended dose of XB2001 due to drug-related toxicity.
This endpoint evaluates the cumulative safety profile and patient tolerance of XB2001 when administered at the Maximum Tolerated Dose (MTD) or the maximum dose studied in Phase I, in combination with the ONIVYDE + LV + 5-FU regimen. Safety is characterized by the total number of participants in each cohort who experienced one or more adverse events. For the purpose of this count, each participant is counted only once, regardless of the total number of individual adverse events experienced.
| Arm | Type | Description |
|---|---|---|
| Phase I: Dose Escalation Phase | EXPERIMENTAL | In Phase I (Dose escalation phase), 3 sequential dose levels were administered by participants; 250 mg (dose cohort 1), 500 mg (dose cohort 2), and 1000 mg (dose cohort 3), and traditional 3:3 design was used. Dose-escalation will continue if none of three subjects experience a dose-limiting toxicity (DLT). After enrollment participants received two treatment cycles (a total of 28 days) in which they were given one intravenous (IV) dose of XB2001 prior to receiving ONIVYDE 70 mg/m2 IV over 90 minutes, followed by leucovorin 400 mg/m2 IV over 30 minutes, followed by 5-Fluorouracil 2400 mg/m2 intravenously over 46 hours at each cycle. |
| Phase II: Dose Expansion Phase | EXPERIMENTAL | In Phase II (dose expansion phase), participants were randomized in 1:1 fashion and received: 1. XB2001 1000 mg combination with ONIVYDE, Leucovorin, and 5-Fluorouracil 2. Placebo 1000 mg in combination with ONIVYDE, Leucovorin, and 5-Fluorouracil |
| Name | Type | Description |
|---|---|---|
| Phase I: XB2001 250 mg | BIOLOGICAL | Subjects were administered one intravenous (IV) dose of XB2001 250 mg prior to receiving ONIVYDE 70 mg/m2 IV over 90 minutes, followed by leucovorin 400 mg/m2 IV over 30 minutes, followed by 5-Fluorouracil 2400 mg/m2 intravenously over 46 hours at each cycle. |
| Phase I: XB2001 500 mg | BIOLOGICAL | Subjects were administered one intravenous (IV) dose of XB2001 500 mg prior to receiving ONIVYDE 70 mg/m2 IV over 90 minutes, followed by leucovorin 400 mg/m2 IV over 30 minutes, followed by 5-Fluorouracil 2400 mg/m2 intravenously over 46 hours at each cycle. |
| Phase I: XB2001 1000 mg | BIOLOGICAL | Subjects were administered one intravenous (IV) dose of XB2001 1000 mg prior to receiving ONIVYDE 70 mg/m2 IV over 90 minutes, followed by leucovorin 400 mg/m2 IV over 30 minutes, followed by 5-Fluorouracil 2400 mg/m2 intravenously over 46 hours at each cycle. |
| Phase II: XB2001 1000 mg | BIOLOGICAL | Subjects were administered one intravenous (IV) dose of XB2001 1000 mg prior to receiving ONIVYDE 70 mg/m2 IV over 90 minutes, followed by leucovorin 400 mg/m2 IV over 30 minutes, followed by 5-Fluorouracil 2400 mg/m2 intravenously over 46 hours at each cycle. |
| Phase II: Placebo | BIOLOGICAL | Subjects were administered one intravenous (IV) dose of placebo 1000 mg prior to receiving ONIVYDE 70 mg/m2 IV over 90 minutes, followed by leucovorin 400 mg/m2 IV over 30 minutes, followed by 5-Fluorouracil 2400 mg/m2 intravenously over 46 hours at each cycle. |
Inclusion Criteria: * Histologically or cytologically confirmed pancreatic adenocarcinoma of exocrine pancreas that is metastatic, unresectable, or recurrent * At least one measurable lesion according to Response Evaluation Criteria in Solid Tumor V1.1 * Documented disease progression after one pri...
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XB2001 is being developed for the treatment of pancreatic cancer. It is an investigational monoclonal antibody studied in patients with advanced pancreatic cancer, specifically in combination with the chemotherapy regimen ONIVYDE plus 5-FU/LV with folinic acid. XB2001 has completed a Phase 1 clinical trial and is not approved for any indication.
XB2001 is being developed by XBiotech Inc., which trades on the Nasdaq under the ticker symbol XBIT. The company sponsored the Phase 1 trial of XB2001 in advanced pancreatic cancer conducted in the United States.
XB2001 is in Phase 1 clinical development. One Phase 1 trial has been completed, and no active trials are currently listed. The study enrolled 76 patients and evaluated XB2001 in combination with ONIVYDE plus 5-FU/LV with folinic acid in advanced pancreatic cancer.
XB2001 has been evaluated in one clinical trial, NCT04825288, titled "XB2001 in Combination With ONIVYDE + 5-FU/LV (+Folinic Acid) in Advanced Pancreatic Cancer." This Phase 1 trial was completed, enrolled 76 participants, and was conducted in the United States in patients with pancreatic cancer.