ClinicalTrials.gg
CompletedNCT02419001Updated Nov 27, 2018Results posted

A Study to Evaluate the Effect of SYN-004 on the PK of IV Ceftriaxone in Adults With a Functioning Ileostomy

A Phase 1/2 interventional study of Period 1 - Treatment Sequence AB and Period 1 - Treatment Sequence AC in Healthy Volunteers, sponsored by Theriva Biologics, Inc.. Completed at 3 sites in 2 countries. Open to participants aged 18 Years to 70 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2018-11-27.

Sponsored by Theriva Biologics, Inc. · Phase 1/2, Interventional, and Treatment

Phase
Phase 1/2
Study type
Interventional
Enrollment
11
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

A Phase 1b/2a, Randomized, Multi-Center, Open-Label, Fixed-Sequence Study to Evaluate the Effect of Oral SYN-004 on the Pharmacokinetics of Intravenous Ceftriaxone in Healthy Adult Subjects with a Functioning Ileostomy.

Read the detailed description

This is a Phase 1b/2a, randomized, multi-center, open-label study. Twenty otherwise healthy subjects between the ages of 18 and 80 years, inclusive, with functioning ileostomies were planned to be enrolled. In the first treatment period (Period 1) all subjects received an IV infusion of 1 g ceftriaxone. Subjects had a 3 - 7 day washout period between Period 1 and Period 2. In the second treatment period (Period 2) all subjects received an IV infusion of 1 g ceftriaxone and 2 oral doses of either 75 or 150 mg of SYN-004, according to the randomization schedule, which were administered 30 minutes before and 5.5 hours after the start of the ceftriaxone infusion.

02

Conditions studied

  • Healthy Volunteers
03

In context

Lead sponsor

Theriva Biologics, Inc. is the lead sponsor of 8 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. The subject has a functioning ileostomy which has been in place for > 3 months.
  2. Male or female between the ages of 18 and 70 years, inclusive.
  3. Other than a functioning ileostomy, the subject is free from illnesses or disease.

Exclusion criteria

Exclusion Criteria:

  1. Subjects who have active hepatic, small intestine, or biliary tract disease.
  2. Subjects who have active ulcerative colitis, Crohn's disease, other inflammatory bowel disease.
  3. Subjects with known requiring treatment \< 6 months prior to study screening.
  4. Subjects who have, in the opinion of the investigator, significant concurrent medical illness.
  5. Subjects who are currently taking concomitant medications which may interfere with study evaluation.
  6. Subjects who have received an drug within 30 days or within a time period consistent with a of 5 half-lives, whichever is longer, of the first dose of ceftriaxone.
  7. Subjects with a known history of allergy to any cephalosporin, penicillin or any β-lactam antibiotic.
  8. Subjects who have known active malabsorption syndromes(s) that, in the judgment of the investigator, could compromise the objectives of the study.
  9. Subjects who have used any oral, intramuscular, or IV anti-microbial medication during the last 3 weeks prior to the screening visit.
Terms in these criteria, in plain language(4)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Washout period

A planned gap after a treatment, so that its effects can lessen before the study treatment or a study assessment. Ask the study team and the doctor who prescribed it before changing any medicine.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
11 participants (actual)

Study arms

  • Experimental
    Period 1 - Treatment Sequence AB

    Treatment Sequence AB: * Period 1: Ceftriaxone 1 g infused IV over 30 minutes * \[Period 2: Ceftriaxone 1 g infused IV over 30 minutes and SYN-004 75 mg (1 x 75 mg capsule) orally administered 30 minutes before and 5.5 hours after the start of the ceftriaxone infusion\]

    Drug: Period 1 - Treatment Sequence AB

  • Experimental
    Period 1 - Treatment Sequence AC

    * Period 1: Ceftriaxone 1 g infused IV over 30 minutes * \[Period 2: Ceftriaxone 1 g infused IV over 30 minutes and SYN-004 150 mg (2 x 75 mg capsules) orally administered 30 minutes before and 5.5 hours after the start of the ceftriaxone infusion\]

    Drug: Period 1 - Treatment Sequence AC

  • Experimental
    Period 2 - Treatment Sequence AB

    Treatment Sequence AB: * \[Period 1: Ceftriaxone 1 g infused IV over 30 minutes\] * Period 2: Ceftriaxone 1 g infused IV over 30 minutes and SYN-004 75 mg (1 x 75 mg capsule) orally administered 30 minutes before and 5.5 hours after the start of the ceftriaxone infusion

    Drug: Period 2 - Treatment Sequence AB

  • Experimental
    Period 2 - Treatment Sequence AC

    * \[Period 1: Ceftriaxone 1 g infused IV over 30 minutes\] * Period 2: Ceftriaxone 1 g infused IV over 30 minutes and SYN-004 150 mg (2 x 75 mg capsules) orally administered 30 minutes before and 5.5 hours after the start of the ceftriaxone infusion

    Drug: Period 2 - Treatment Sequence AC

Interventions

  • DrugPeriod 1 - Treatment Sequence AB

    Period 1: Ceftriaxone 1 g infused IV over 30 minutes only, no SYN-004

  • DrugPeriod 1 - Treatment Sequence AC

    Period 1: Ceftriaxone 1 g infused IV over 30 minutes only, no SYN-004

  • DrugPeriod 2 - Treatment Sequence AB

    Period 2: Ceftriaxone 1 g infused IV over 30 minutes and SYN-004 75 mg

    Also known as: ribaxamase

  • DrugPeriod 2 - Treatment Sequence AC

    Period 2: Ceftriaxone 1 g infused IV over 30 minutes and SYN-004 150 mg

    Also known as: ribaxamase

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What researchers measure

Primary outcomes

  1. Ceftriaxone PK Maximum Observed Plasma Concentration (Cmax) With (Period 2) and Without (Period 1) SYN-004.

    Time frame: 2 weeks

  2. Ceftriaxone PK Time to Reach Cmax (Tmax) With (Period 2) and Without (Period 1) SYN-004.

    Samples were collected at 0.25 h, 0.5 through 2 h, and 3 through 7 h after the infusion start. Standard deviations may be 0 if all collected T max values occur at the same time.

    Time frame: 2 weeks

  3. Ceftriaxone PK Area Under the Concentration-time Curve From Time 0 to the Last Quantifiable Concentration (AUCt) With (Period 2) and Without (Period 1) SYN-004.

    Time frame: 2 weeks

07

Results

Posted Jan 11, 2017

Participant flow

Period 1- Ceftriaxone Without SYN-004
Participant flow — Period 1- Ceftriaxone Without SYN-004
MilestoneLow DoseHigh Dose
Started65
Completed55
Not completed10
Withdrew: Ae w/ ceftriaxone, not dosed w/ ip10
Period 2- Ceftriaxone With SYN-004
Participant flow — Period 2- Ceftriaxone With SYN-004
MilestoneLow DoseHigh Dose
Started55
Completed55
Not completed00

Outcome measures

PrimaryCeftriaxone PK Maximum Observed Plasma Concentration (Cmax) With (Period 2) and Without (Period 1) SYN-004.
Time frame:
2 weeks
Reported as:
Mean · ng/mL
Ceftriaxone PK Maximum Observed Plasma Concentration (Cmax) With (Period 2) and Without (Period 1) SYN-004.
ng/mLTreatment Sequence ABTreatment Sequence AC
Period 1137,800.0 ± 10,709.8178,600.0 ± 34,623.7
Period 2143,800.0 ± 13,103.4169,200.0 ± 32,782.6
PrimaryCeftriaxone PK Time to Reach Cmax (Tmax) With (Period 2) and Without (Period 1) SYN-004.

Samples were collected at 0.25 h, 0.5 through 2 h, and 3 through 7 h after the infusion start. Standard deviations may be 0 if all collected T max values occur at the same time.

Time frame:
2 weeks
Reported as:
Mean · hours
Ceftriaxone PK Time to Reach Cmax (Tmax) With (Period 2) and Without (Period 1) SYN-004.
hoursTreatment Sequence ABTreatment Sequence AC
Period 10.5 ± 0.00.5 ± 0.0
Period 20.5 ± 0.00.5 ± 0.0
PrimaryCeftriaxone PK Area Under the Concentration-time Curve From Time 0 to the Last Quantifiable Concentration (AUCt) With (Period 2) and Without (Period 1) SYN-004.
Time frame:
2 weeks
Reported as:
Mean · h*ng/mL
Ceftriaxone PK Area Under the Concentration-time Curve From Time 0 to the Last Quantifiable Concentration (AUCt) With (Period 2) and Without (Period 1) SYN-004.
h*ng/mLTreatment Sequence ABTreatment Sequence AC
Period 1464,400.0 ± 26,884.9656,200.0 ± 105,257.8
Period 2478,800.0 ± 37,117.4643,800.0 ± 108,349.9

Adverse events

Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Low Dose—0/6 (0%)4/6 (66.7%)
High Dose—0/5 (0%)4/5 (80%)
Most frequent other events
Showing 10 of 17
Most frequent other events
EventLow DoseHigh Dose
HeadacheNervous system disorders1/62/5
PollakiuriaRenal and urinary disorders0/61/5
Back painMusculoskeletal and connective tissue disorders0/61/5
Pain in extremityMusculoskeletal and connective tissue disorders0/61/5
Upper respiratory tract infectionInfections and infestations0/61/5
ErythemaSkin and subcutaneous tissue disorders0/61/5
Abdominal painGastrointestinal disorders1/60/5
SomnolenceNervous system disorders1/60/5
Catheter site bruiseGeneral disorders1/60/5
DiscomfortGeneral disorders1/60/5

Baseline characteristics

Age, Continuous
Age, Continuous(years)Low DoseHigh DoseTotal
Mean41.3 ± 11.957.1 ± 11.648.5 ± 13.8
Sex: Female, Male
Sex: Female, Male(Participants)Low DoseHigh DoseTotal
Female123
Male538
08

Study locations

3 sites
  • Columbus, Ohio 43210, United States
  • Edmonton, Alberta, Canada
  • Montreal, Canada
09

References and documents

Publications

  • Kokai-Kun JF, Roberts T, Coughlin O, Sicard E, Rufiange M, Fedorak R, Carter C, Adams MH, Longstreth J, Whalen H, Sliman J. The Oral beta-Lactamase SYN-004 (Ribaxamase) Degrades Ceftriaxone Excreted into the Intestine in Phase 2a Clinical Studies. Antimicrob Agents Chemother. 2017 Feb 23;61(3):e02197-16. doi: 10.1128/AAC.02197-16. Print 2017 Mar. PubMed 28052855 ↗
10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 27, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT02419001
Lead sponsor
Theriva Biologics, Inc.
Responsible party
Sponsor
First posted
Apr 17, 2015
Start date
Mar 2015
Primary completion
Sep 2015
Completion
Oct 2015
Results posted
Jan 11, 2017
Last update
Nov 27, 2018

Study contacts

Michael Kaleko, M.D.
study chair · Synthetic Biologics

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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