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Pharmacokinetic and Pharmacodynamic Study of IDN-6556 in ACLF

A Placebo-Controlled, Multicenter, Double-Blind, Randomized, Pharmacokinetic and Pharmacodynamic Trial of IDN-6556 in Subjects With Acute-on-Chronic Liver Failure

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01937130
Enrollment
23
Registered
2013-09-09
Start date
2013-09-30
Completion date
2015-02-28
Last updated
2016-04-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Acute Alcoholic Hepatitis, Acute Liver Failure, Acute on Chronic Hepatic Failure, Liver Cirrhosis

Keywords

Liver Failure, Cirrhosis, Alcoholic Hepatitis

Brief summary

The study will evaluate the pharmacokinetics, pharmacodynamics, safety and preliminary efficacy of IDN-6556 in subjects with cirrhosis of the liver who are hospitalized for more than 24 hours due to acute deterioration of liver function.

Interventions

OTHERPlacebo

Sponsors

Conatus Pharmaceuticals Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Male or female subjects of minimum adult legal age (according to local laws for signing the informed consent document), able to provide written informed consent, and understand and comply with the requirements of the study * Subjects with a clinical, radiological and/or histological diagnosis of cirrhosis * Subjects having not required hospital admission within 4 weeks of screening for a complication of cirrhosis * Subjects with an acute deterioration of liver function * Subjects who meet one of the following criteria: 1. Subjects with renal failure (defined as creatinine ≥ 2.0 to ≤ 3.4 mg/dL) 2. Subjects with other single organ failure with i. Renal impairment (defined as an increase in creatinine of \> 0.3 mg/dL from either an established prior Baseline level or if applicable, upon admission to hospital if prior level is unavailable; for inclusion, the creatinine level must be raised above normal levels), and/or ii. Hepatic encephalopathy grade I or II 3. Subjects with two organ failures * If a subject received steroids for alcohol-induced acute liver failure, he/she must be unresponsive to steroid therapy. Responsiveness is based on investigator discretion. * Willingness to utilize two reliable forms of contraception (for both males and females of childbearing potential) from screening to one month after the last dose of study drug

Exclusion criteria

* Known infection with HIV * Subjects with cirrhosis who develop decompensation at any time in the postoperative period following partial hepatectomy * Subjects with evidence of uncontrolled infection defined as persistent bacterial culture positivity despite adequate antibiotic therapy * Subjects with clinical evidence of disseminated intravascular coagulation * Subjects with chronic and/or pre-existing kidney disease defined as eGFR (estimated glomerular filtration rate) of less than 30 mL/min for 3 months or longer * Subjects who are hypotensive (defined as mean arterial pressure \<70 mmHg) or require the use of inotropic support * Subjects with evidence of significant and/or uncontrolled bleeding * Subjects requiring mechanical ventilation * Subjects with active or history of malignancies other than hepatocellular carcinoma (HCC) within Milan criteria or curatively treated skin cancer (basal cell or squamous cell carcinomas), unless adequately treated or in complete remission for five or more years * Subjects previously exposed to IDN-6556 * History or presence of clinically concerning cardiac arrhythmias, or prolongation of Screening (pre-treatment) QT or QTc interval of \> 480 milliseconds (msec)

Design outcomes

Primary

MeasureTime frameDescription
Area Under the Curve (AUC)28 daysPrimary endpoints for AUC\_0-8, AUC\_0 last, AUC\_0-inf on Day 1 and Day 4 for the active treatment arms were analyzed.
Cmax28 DaysPrimary endpoints forCmax on Day 1 and Day 4 for the active treatment arms were analyzed.
Tmax & t1/2 Parameters28 DaysPrimary endpoints for tmax & t1/2 on Day 1 and Day 4 for the active treatment arms were analyzed.

Secondary

MeasureTime frameDescription
Levels of CK18/M30Baseline, Day 2, Day 4, Day 7, Day 14, Day 21, and Day 28Caspase-cleaved cytokeratin serum levels (CK18/M30)
Levels of CK18/M65Baseline, Day 2, Day 4, Day 7, Day 14, Day 21, and Day 28Caspase full-length cytokeratin serum levels CK18/M65
Levels of Caspase 3/7 RLUBaseline, Day 2, Day 4, Day 7, Day 14, Day 21, and Day 28Concentration of Caspase 3/7 Relative Light Units

Countries

United Kingdom, United States

Participant flow

Recruitment details

In total, 33 subjects were screened at 14 sites, and 23 subjects were randomized to one of the 4 treatment arms.

Pre-assignment details

23 subjects were randomized but 21 subjects received treatment. 1 subject lost due to death and 1 subject lost due to withdrew of consent. 7 subject of 21 completed the treatment phase (Day 28). 4 of 3 completed the two follow-up phone calls made at Months 3 and 6. 14 subjects discontinued the study early.

Participants by arm

ArmCount
IDN-6556 5 mg
Dosed twice daily IDN-6556
5
IDN-6556 25 mg
Dosed twice daily IDN-6556
7
IDN-6556 50 mg
Dosed twice daily IDN-6556
5
Placebo
Dosed twice daily Placebo
4
Total21

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Overall StudyAdverse Event0101
Overall StudyDeath1110
Overall StudyLost to Follow-up2020
Overall StudyPatient lost to FU due to death2000
Overall StudyPatients unable to swallow0100
Overall StudyPhysician Decision0100
Overall StudyWithdrawal by Subject0001

Baseline characteristics

CharacteristicIDN-6556 5 mgIDN-6556 25 mgIDN-6556 50 mgPlaceboTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants1 Participants0 Participants1 Participants
Age, Categorical
Between 18 and 65 years
5 Participants7 Participants4 Participants4 Participants20 Participants
Age, Continuous49.0 years50.0 years61.0 years53.5 years50.0 years
Region of Enrollment
United Kingdom
5 participants5 participants4 participants2 participants16 participants
Region of Enrollment
United States
0 participants2 participants1 participants2 participants5 participants
Sex: Female, Male
Female
2 Participants2 Participants2 Participants2 Participants8 Participants
Sex: Female, Male
Male
3 Participants5 Participants3 Participants2 Participants13 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —
other
Total, other adverse events
3 / 57 / 74 / 53 / 4
serious
Total, serious adverse events
3 / 56 / 73 / 52 / 4

Outcome results

Primary

Area Under the Curve (AUC)

Primary endpoints for AUC\_0-8, AUC\_0 last, AUC\_0-inf on Day 1 and Day 4 for the active treatment arms were analyzed.

Time frame: 28 days

Population: AUC\_0-last: The number of participants analyzed in the 25mg arm was 7 at Day 1 AUC\_0-inf: The number of participants analyzed in the 5mg arm was 2 at Day 1 and 0 at Day 4, in the 25mg arm was 5 at Day 1 and 2 at Day 4, in the 50mg arm was 2 at Day 1 and 3 at Day 4.~Values listed as 0 were non-estimable values.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
IDN-6556 5 mgArea Under the Curve (AUC)Day 1 AUC 0-8275 h*ng/mLGeometric Coefficient of Variation 40
IDN-6556 5 mgArea Under the Curve (AUC)Day 4 AUC 0-8224.3 h*ng/mLGeometric Coefficient of Variation 36.9
IDN-6556 5 mgArea Under the Curve (AUC)Day 1 AUC 0-last275 h*ng/mLGeometric Coefficient of Variation 40
IDN-6556 5 mgArea Under the Curve (AUC)Day 4 AUC 0-last224.3 h*ng/mLGeometric Coefficient of Variation 36.9
IDN-6556 5 mgArea Under the Curve (AUC)Day 1 AUC 0-inf0 h*ng/mLGeometric Coefficient of Variation 0
IDN-6556 5 mgArea Under the Curve (AUC)Day 4 AUC 0-inf0 h*ng/mLGeometric Coefficient of Variation 0
IDN-6556 25 mgArea Under the Curve (AUC)Day 4 AUC 0-inf0 h*ng/mLGeometric Coefficient of Variation 0
IDN-6556 25 mgArea Under the Curve (AUC)Day 1 AUC 0-81165 h*ng/mLGeometric Coefficient of Variation 45.3
IDN-6556 25 mgArea Under the Curve (AUC)Day 4 AUC 0-last1818 h*ng/mLGeometric Coefficient of Variation 27.8
IDN-6556 25 mgArea Under the Curve (AUC)Day 1 AUC 0-inf1462 h*ng/mLGeometric Coefficient of Variation 30.3
IDN-6556 25 mgArea Under the Curve (AUC)Day 4 AUC 0-81767 h*ng/mLGeometric Coefficient of Variation 31.4
IDN-6556 25 mgArea Under the Curve (AUC)Day 1 AUC 0-last1295 h*ng/mLGeometric Coefficient of Variation 33.4
IDN-6556 50 mgArea Under the Curve (AUC)Day 4 AUC 0-82148 h*ng/mLGeometric Coefficient of Variation 227.9
IDN-6556 50 mgArea Under the Curve (AUC)Day 1 AUC 0-last2997 h*ng/mLGeometric Coefficient of Variation 103.8
IDN-6556 50 mgArea Under the Curve (AUC)Day 4 AUC 0-inf3447 h*ng/mLGeometric Coefficient of Variation 188.2
IDN-6556 50 mgArea Under the Curve (AUC)Day 4 AUC 0-last2294 h*ng/mLGeometric Coefficient of Variation 257.9
IDN-6556 50 mgArea Under the Curve (AUC)Day 1 AUC 0-82397 h*ng/mLGeometric Coefficient of Variation 99.3
IDN-6556 50 mgArea Under the Curve (AUC)Day 1 AUC 0-inf0 h*ng/mLGeometric Coefficient of Variation 0
Primary

Cmax

Primary endpoints forCmax on Day 1 and Day 4 for the active treatment arms were analyzed.

Time frame: 28 Days

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
IDN-6556 5 mgCmaxDay 1 Cmax84.4 (ng/mL)Geometric Coefficient of Variation 43.9
IDN-6556 5 mgCmaxDay 4 Cmax38.0 (ng/mL)Geometric Coefficient of Variation 33.9
IDN-6556 25 mgCmaxDay 1 Cmax329.8 (ng/mL)Geometric Coefficient of Variation 48.3
IDN-6556 25 mgCmaxDay 4 Cmax586.5 (ng/mL)Geometric Coefficient of Variation 33.7
IDN-6556 50 mgCmaxDay 1 Cmax696.1 (ng/mL)Geometric Coefficient of Variation 117.4
IDN-6556 50 mgCmaxDay 4 Cmax594.1 (ng/mL)Geometric Coefficient of Variation 161.3
Primary

Tmax & t1/2 Parameters

Primary endpoints for tmax & t1/2 on Day 1 and Day 4 for the active treatment arms were analyzed.

Time frame: 28 Days

Population: t1/2 number of participants analyzed at Day 1 in the 5mg arm was 2 and 1 at Day 4, in the 25mg arm was 5 at Day 1 and 2 at Day 4, in the 50mg arm was 2 at Day 1 and 3 at Day 4.~Values listed as 0 were non-estimable values.

ArmMeasureGroupValue (MEAN)Dispersion
IDN-6556 5 mgTmax & t1/2 ParametersDay 1 t1/20 (h)Standard Deviation 0
IDN-6556 5 mgTmax & t1/2 ParametersDay 4 t1/20 (h)Standard Deviation 0
IDN-6556 5 mgTmax & t1/2 ParametersDay 4 tmax3.8 (h)Standard Deviation 3.4
IDN-6556 5 mgTmax & t1/2 ParametersDay 1 tmax3.0 (h)Standard Deviation 1.3
IDN-6556 25 mgTmax & t1/2 ParametersDay 1 tmax2.9 (h)Standard Deviation 1.5
IDN-6556 25 mgTmax & t1/2 ParametersDay 4 tmax2.7 (h)Standard Deviation 1.8
IDN-6556 25 mgTmax & t1/2 ParametersDay 4 t1/20 (h)Standard Deviation 0
IDN-6556 25 mgTmax & t1/2 ParametersDay 1 t1/22.2 (h)Standard Deviation 0.7
IDN-6556 50 mgTmax & t1/2 ParametersDay 4 t1/23.4 (h)Standard Deviation 2.7
IDN-6556 50 mgTmax & t1/2 ParametersDay 1 tmax3.6 (h)Standard Deviation 3
IDN-6556 50 mgTmax & t1/2 ParametersDay 4 tmax3.5 (h)Standard Deviation 2.8
IDN-6556 50 mgTmax & t1/2 ParametersDay 1 t1/20 (h)Standard Deviation 0
Secondary

Levels of Caspase 3/7 RLU

Concentration of Caspase 3/7 Relative Light Units

Time frame: Baseline, Day 2, Day 4, Day 7, Day 14, Day 21, and Day 28

Population: Number of subjects analyzed varied by time point; Day2: 5 and 25 arms are 4 and 6; Day4: 25 and placebo arms are 6 and 2; Day7: 25 arm is 6; Day14: 5, 25, 50, and placebo arms are 2, 5, 3, and 2; Day21: 5, 25, 50, and placebo arms are 2, 3, 2, and 2; Day28: 5, 25, 50, and placebo arms are 0, 3, 2, and 2; 0 are non-estimable values

ArmMeasureGroupValue (MEDIAN)
IDN-6556 5 mgLevels of Caspase 3/7 RLUBaseline4418 RLU
IDN-6556 5 mgLevels of Caspase 3/7 RLUDay 212914 RLU
IDN-6556 5 mgLevels of Caspase 3/7 RLUDay 142265 RLU
IDN-6556 5 mgLevels of Caspase 3/7 RLUDay 22893 RLU
IDN-6556 5 mgLevels of Caspase 3/7 RLUDay 280 RLU
IDN-6556 5 mgLevels of Caspase 3/7 RLUDay 43147 RLU
IDN-6556 5 mgLevels of Caspase 3/7 RLUDay 74081 RLU
IDN-6556 25 mgLevels of Caspase 3/7 RLUDay 21636 RLU
IDN-6556 25 mgLevels of Caspase 3/7 RLUDay 71271 RLU
IDN-6556 25 mgLevels of Caspase 3/7 RLUDay 41136 RLU
IDN-6556 25 mgLevels of Caspase 3/7 RLUDay 141180 RLU
IDN-6556 25 mgLevels of Caspase 3/7 RLUDay 281208 RLU
IDN-6556 25 mgLevels of Caspase 3/7 RLUDay 21487 RLU
IDN-6556 25 mgLevels of Caspase 3/7 RLUBaseline3967 RLU
IDN-6556 50 mgLevels of Caspase 3/7 RLUDay 7958 RLU
IDN-6556 50 mgLevels of Caspase 3/7 RLUBaseline4304 RLU
IDN-6556 50 mgLevels of Caspase 3/7 RLUDay 2974 RLU
IDN-6556 50 mgLevels of Caspase 3/7 RLUDay 41204 RLU
IDN-6556 50 mgLevels of Caspase 3/7 RLUDay 14835 RLU
IDN-6556 50 mgLevels of Caspase 3/7 RLUDay 21962 RLU
IDN-6556 50 mgLevels of Caspase 3/7 RLUDay 28963 RLU
PlaceboLevels of Caspase 3/7 RLUDay 45853 RLU
PlaceboLevels of Caspase 3/7 RLUDay 281894 RLU
PlaceboLevels of Caspase 3/7 RLUDay 211590 RLU
PlaceboLevels of Caspase 3/7 RLUDay 23989 RLU
PlaceboLevels of Caspase 3/7 RLUBaseline4074 RLU
PlaceboLevels of Caspase 3/7 RLUDay 141869 RLU
PlaceboLevels of Caspase 3/7 RLUDay 73917 RLU
Secondary

Levels of CK18/M30

Caspase-cleaved cytokeratin serum levels (CK18/M30)

Time frame: Baseline, Day 2, Day 4, Day 7, Day 14, Day 21, and Day 28

Population: Number of subjects analyzed varied by time point; Day2: 5 and 25 arms are 4 and 6; Day4: 25 and placebo arms are 6 and 2; Day7: 25 arm is 6; Day14: 5, 25, 50, and placebo arms are 2, 5, 3, and 2; Day21: 5, 25, 50, and placebo arms are 2, 3, 2, and 2; Day28: 5, 25, 50, and placebo arms are 0, 3, 2, and 2; 0 are non-estimable values

ArmMeasureGroupValue (MEDIAN)
IDN-6556 5 mgLevels of CK18/M30Baseline703 U/L
IDN-6556 5 mgLevels of CK18/M30Day 21850 U/L
IDN-6556 5 mgLevels of CK18/M30Day 141307 U/L
IDN-6556 5 mgLevels of CK18/M30Day 2465 U/L
IDN-6556 5 mgLevels of CK18/M30Day 280 U/L
IDN-6556 5 mgLevels of CK18/M30Day 4717 U/L
IDN-6556 5 mgLevels of CK18/M30Day 7562 U/L
IDN-6556 25 mgLevels of CK18/M30Day 21770 U/L
IDN-6556 25 mgLevels of CK18/M30Day 71226 U/L
IDN-6556 25 mgLevels of CK18/M30Day 4847 U/L
IDN-6556 25 mgLevels of CK18/M30Day 141149 U/L
IDN-6556 25 mgLevels of CK18/M30Day 28808 U/L
IDN-6556 25 mgLevels of CK18/M30Day 2616 U/L
IDN-6556 25 mgLevels of CK18/M30Baseline1392 U/L
IDN-6556 50 mgLevels of CK18/M30Day 7319 U/L
IDN-6556 50 mgLevels of CK18/M30Baseline919 U/L
IDN-6556 50 mgLevels of CK18/M30Day 2348 U/L
IDN-6556 50 mgLevels of CK18/M30Day 4362 U/L
IDN-6556 50 mgLevels of CK18/M30Day 14577 U/L
IDN-6556 50 mgLevels of CK18/M30Day 21551 U/L
IDN-6556 50 mgLevels of CK18/M30Day 28533 U/L
PlaceboLevels of CK18/M30Day 4634 U/L
PlaceboLevels of CK18/M30Day 28553 U/L
PlaceboLevels of CK18/M30Day 21626 U/L
PlaceboLevels of CK18/M30Day 2425 U/L
PlaceboLevels of CK18/M30Baseline455 U/L
PlaceboLevels of CK18/M30Day 14843 U/L
PlaceboLevels of CK18/M30Day 7466 U/L
Secondary

Levels of CK18/M65

Caspase full-length cytokeratin serum levels CK18/M65

Time frame: Baseline, Day 2, Day 4, Day 7, Day 14, Day 21, and Day 28

Population: Number of subjects analyzed varied by time point; Day2: 5 and 25 arms are 4 and 6; Day4: 25 and placebo arms are 6 and 2; Day7: 25 arm is 6; Day14: 5, 25, 50, and placebo arms are 2, 5, 3, and 2; Day21: 5, 25, 50, and placebo arms are 2, 3, 2, and 2; Day28: 5, 25, 50, and placebo arms are 0, 3, 2, and 2; 0 are non-estimable values

ArmMeasureGroupValue (MEDIAN)
IDN-6556 5 mgLevels of CK18/M65Baseline1345 U/L
IDN-6556 5 mgLevels of CK18/M65Day 213809 U/L
IDN-6556 5 mgLevels of CK18/M65Day 141961 U/L
IDN-6556 5 mgLevels of CK18/M65Day 21058 U/L
IDN-6556 5 mgLevels of CK18/M65Day 280 U/L
IDN-6556 5 mgLevels of CK18/M65Day 41237 U/L
IDN-6556 5 mgLevels of CK18/M65Day 71364 U/L
IDN-6556 25 mgLevels of CK18/M65Day 212039 U/L
IDN-6556 25 mgLevels of CK18/M65Day 72601 U/L
IDN-6556 25 mgLevels of CK18/M65Day 42257 U/L
IDN-6556 25 mgLevels of CK18/M65Day 143067 U/L
IDN-6556 25 mgLevels of CK18/M65Day 281825 U/L
IDN-6556 25 mgLevels of CK18/M65Day 22116 U/L
IDN-6556 25 mgLevels of CK18/M65Baseline2819 U/L
IDN-6556 50 mgLevels of CK18/M65Day 71997 U/L
IDN-6556 50 mgLevels of CK18/M65Baseline1946 U/L
IDN-6556 50 mgLevels of CK18/M65Day 21287 U/L
IDN-6556 50 mgLevels of CK18/M65Day 41436 U/L
IDN-6556 50 mgLevels of CK18/M65Day 141286 U/L
IDN-6556 50 mgLevels of CK18/M65Day 212500 U/L
IDN-6556 50 mgLevels of CK18/M65Day 282119 U/L
PlaceboLevels of CK18/M65Day 4990 U/L
PlaceboLevels of CK18/M65Day 281027 U/L
PlaceboLevels of CK18/M65Day 211125 U/L
PlaceboLevels of CK18/M65Day 21195 U/L
PlaceboLevels of CK18/M65Baseline1324 U/L
PlaceboLevels of CK18/M65Day 141310 U/L
PlaceboLevels of CK18/M65Day 71086 U/L

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026