Study of Choline Chloride for Injection in Adolescent and Adult Patients With Intestinal Failure Receiving Long Term Parenteral Support

Condition(s) studied

Investigational drug(s) / intervention(s)

Choline Chloride for Injection: Intravenous use

Placebo: Intravenous use

Study summary

TARA-001-301 is a Phase 2b/3 randomized Open-Label Dose-Selection study with an Open-Label Extension and randomized Double-Blind, Placebo-Controlled Study with Open-Label Extension to investigate the safety and efficacy of Choline Chloride for Injection (Low Dose and High Dose) versus Placebo in adolescents (ages 12 to \< 18 years of age) and adults (≥ 18 years of age) with intestinal failure receiving long-term PS when oral or enteral nutrition is not possible, insufficient, or contraindicated.

Participants will be enrolled in one of 2 parts, each part will be followed by an open-label extension period of approximately a year.

Part 1: Open-Label Dose-Selection Phase Part 2: Double-Blind, Placebo-Controlled Phase

The purpose of the Open-Label Dose-Selection Phase is to evaluate the safety, tolerability, how Choline Chloride for Injection (study drug) is distributed in the body, and to select 2 of 3 doses for testing in the Double-Blind, Placebo-Controlled Phase.

The purpose of the Double-Blind, Placebo-Controlled Phase is to assess the safety of the study drug and how well the study drug works at the 2 selected dose levels.

Eligibility

Primary outcome measure(s)

• Open-Label Dose-Selection Phase: PK of plasma free choline (Cmax) during Week 1 and Week 8 Visits — Week 1 to Week 8
  Cmax = maximum concentration
• Open-Label Dose-Selection Phase: Open-Label Dose-Selection Phase: PK of plasma free choline (Tmax) during Week 1 and Week 8 Visits — Week 1 to Week 8
  Tmax = time of maximum concentration
• Open-Label Dose-Selection Phase: PK of plasma free choline (AUC(0-TAU)) during Week 1 and Week 8 Visits — Week 1 to Week 8
  AUC = area under the curve, AUC(0-TAU) = AUC at end of dosing
• Open-Label Dose-Selection Phase: Change from Baseline in plasma free choline concentrations at Week 8 — Week 1 to Week 8
• Open-Label Dose-Selection Phase and Double-Blind, Placebo-Controlled Phase, Open-Label Extension Phase: Incidence and severity of TEAEs Incidence of TESAEs — Week 1 to Week 64
  TEAE = treatment emergent adverse event, TESAE = treatment emergent serious adverse event
• Double-Blind, Placebo-Controlled Phase: Change from Baseline in peak plasma free choline concentrations (Cmax) at Week 8 in participants receiving Choline Chloride for Injection versus Placebo — Week 1 to Week 8
  Tmax = time of maximum concentration
• Open-Label Extension Phase: Participants from Open-Label Dose-Selection Phase: Percentage of participants with plasma free choline concentrations of ≥ 9.5 nmol/mL at Week 64 — Week 64
• Open-Label Extension Phase: Percentage of participants maintaining plasma free choline concentrations of ≥ 9.5 nmol/mL at Week 8 and Week 64 (ie, both timepoints) — Week 8 to Week 64
• Open-Label Extension Phase: Participants from Double-Blind, Placebo-Controlled Phase: % with plasma free choline concentrations of ≥9.5 nmol/mL at Week 64 — Week 1 to Week 64
• Open-Label Extension Phase: Participants from Double-Blind Placebo-Controlled Phase: % maintaining plasma free choline concentrations of ≥ 9.5 nmol/mL at Week 8, Week 24 and Week 64 for participants who previously received Choline Chloride for Injection — Week 8 to Week 64

Trial sites (18)

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