UNLOCKED: A Phase 2, Open-label Trial With KB195 in Subjects With a Urea Cycle Disorder

Kaleido Biosciences

Status and phase

Terminated

Phase 2

Conditions

Urea Cycle Disorder

Treatments

Drug: KB195

Study type

Interventional

Funder types

Industry

Identifiers

NCT03933410

K020-218

Details and patient eligibility

About

UNLOCKED: A Phase 2 Trial to Evaluate the Efficacy and Safety of KB195 in Subjects with a Urea Cycle Disorder with Inadequate Control on Standard of Care

Full description

We expect the trial to enroll approximately 24 Urea Cycle Disorder (UCD) patients on standard of care with elevated ammonia levels. The planned treatment duration is eight weeks, with a primary endpoint of proportion of subjects who achieve a ≥15% reduction from baseline in fasting ammonia at the end of treatment. Patients will also be followed for safety and tolerability. This clinical trial is intended to allow us to evaluate efficacy of KB195 in reducing ammonia in UCD patients.

Enrollment

13 patients

Sex

All

Ages

18 to 65 years old

Volunteers

No Healthy Volunteers

Inclusion and exclusion criteria

Key Inclusion Criteria:

Signed informed consent and willing to comply with protocol-specified procedures.
Has any confirmed UCD other than N-acetyl glutamatesynthase (NAGS) deficiency.
Is male or female, 12 to 70 years of age (inclusive)
If ≥ 18 years old, has a BMI ≥20.0 and < 40.0 kg/m2. If < 18 years old, has a BMI between 5th percentile and 95th percentile and weight greater than 5th percentile according to age, sex and regionally appropriate growth chart
Has evidence of poorly controlled disease on the current standard of care (SOC)
If NBT is part of SOC, is on a stable dose and regimen for at least 4 weeks before Screening and the dose is expected to remain stable during the study
Is willing to maintain a stable diet throughout the course of study and is willing to continue usual exercise routine.
If taking probiotics or prebiotics, is on a stable dose regimen for at least 4 weeks before Screening and the dose and regimen are expected to remain stable during the study
Has a negative urine screen for drugs of abuse at Screening
If male or female of child bearing potential, agree with use effective method of contraception for the duration of the study and 90 days after last dose of study product

Key Exclusion Criteria:

Is at a high risk for metabolic decomposition.
Has had a substantive change in diet or any other aspect of UCD management within 4 weeks before the Screening Visit
Has used a systemic anti-infective within 4 weeks before the Screening Visit, or use is anticipated during the study
Has been diagnosed with Citrullinemia Type II
Is receiving any systemically administered immunosuppressant medication on a chronic basis
Has changed the use of or dose of any drug or other compound to modulate GI motility within 4 weeks before the Screening Visit, or the use or dose is expected change during the course of the study
Has a history of or active GI or liver disease
Has a prior solid organ transplantation including liver transplantation, or is anticipated to receive a liver transplant during study participation
Has used an investigational drug, product, or device within 30 days before the Screening Visit
Has a contraindication, sensitivity, or known allergy to the study drug
Is considered, in the opinion of the PI, to likely be a poor attendee or unlikely for any reason to be able to comply with the study drug procedures