A MULTICENTER, DOUBLE-BLIND, RANDOMIZED, PLACEBO-CONTROLLED STUDY TO EVALUATE THE SAFETY AND EFFICACY OF INTRAVENOUS CR845 IN HEMODIALYSIS PATIENTS WITH MODERATE-TO-SEVERE PRURITUS, WITH A 52-WEEK OPEN-LABEL EXTENSIO
- Conditions
- PRURITUS,Therapeutic area: Diseases [C] - Skin and Connective Tissue Diseases [C17]
- Registration Number
- EUCTR2018-001930-17-HU
- Lead Sponsor
- Cara Therapeutics INC
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- ot Recruiting
- Sex
- All
- Target Recruitment
- 350
Inclusion Criteria:
To be eligible for inclusion into the Double-blind Phase of the study, a
patient must meet the following criteria:
1. Willing and able to provide written informed consent prior to
participating in this study;
2. Able to communicate clearly with the Investigator and staff,
able to understand the study procedures, and able and willing
to comply with the study requirements; 3. Male or female 18 years of age or older;
4. Has end-stage renal disease (ESRD) and has been on
hemodialysis 3 times per week for at least 3 months prior to
the start of screening;
Note 1: Patients who require an occasional additional dialysis
treatment to manage fluid overload or electrolyte excesses
may be enrolled as long as it is anticipated that no more than
1 such treatment will be required in any given week and no
more than 4 occasions during the 12-week double-blind
period. Patients routinely on 4 dialyses a week will not be
eligible.
Note 2: Patients receiving in-home hemodialysis may
participate as long as they have switched to in-center
hemodialysis at least 2 weeks prior to screening and plan to
remain on in-center hemodialysis for the duration of the
study.
5. If female, is not pregnant or nursing during any period of the
study;
6. If female:
a. Is surgically sterile; or
b. Has been amenorrhoeic for at least 1 year and is over the
age of 55 years; or
c. Has a negative serum pregnancy test at screening and
agrees to use acceptable contraceptive measures
(eg, hormonal contraceptives, barrier with spermicide,
intrauterine device, vasectomized partner, or abstinence)
from the time of informed consent until 7 days after the
last dose of study drug;
7. If male, agrees not to donate sperm after the first dose of study
drug until 7 days after the last dose of study drug, and agrees to
use a condom with spermicide or abstain from heterosexual
intercourse during the study until 7 days after the last dose of
study drug. (Note: No restrictions are required for a
vasectomized male provided his vasectomy was performed
=4 months prior to screening);
8. Has a prescription dry body weight between 40.0 and 135.0 kg,
inclusive;
9. Has at least 2 single-pool Kt/V measurements =1.2, or at least
2 urea reduction ratio measurements =65%, or 1 single-pool
Kt/V measurement =1.2 and 1 urea reduction ratio
measurement =65% on different dialysis days during the
3 months period prior to screening;
10. Prior to randomization:
a. Has completed at least four out of eight Worst Itching
Intensity Numerical Rating Scale (NRS) worksheets fromhe start of the 7-day Run-in Period up to and including the
pre-randomization assessment on Day 1;
b. Has a mean baseline Worst Itching Intensity NRS score
=5, defined as the average of all non-missing scores
reported from the start of the 7-day Run-in Period up to
and including the pre-randomization assessment on Day 1.
Are the trial subjects under 18? no
Number of subjects for this age range:
F.1.2 Adults (18-64 years) yes
F.1.2.1 Number of subjects for this age range 350
F.1.3 Elderly (>=65 years) no
F.1.3.1 Number of subjects for this age range
Exclusion Criteria:
A patient will be excluded from the Double-blind Phase of the study if
any of the following criteria are met:
1. Known noncompliance with dialysis treatment that in the
opinion of the Investigator would impede completion or
validity of the study;
2. Scheduled to receive a kidney transplant during the study;
3. Known history of allergic reaction to opiates, such as hives
(Note: side effects related to the use of opioids, such as
constipation or nausea, would not exclude patients from the
study).
4. Has a concomitant disease or a history of any medical
condition that, in the opinion of the Investigator, could pose
undue risk to the patient, impede completion of the study
procedures, or would compromise the validity of the study
measurements, including, but not limited to:
a. Known or suspected history of alcohol, narcotic, or other
drug abuse, or substance dependence within 12 months
prior to screening;
b. Significant systolic or diastolic heart failure (eg, New
York Heart Association Class IV congestive heart failure
[Appendix 1, Section 14.1]);
c. Severe mental illness or cognitive impairment (eg,
dementia);
d. Any other relevant acute or chronic medical or
neuropsychiatric condition within 3 months prior to
screening (eg, diagnosis of encephalopathy, coma,
delirium);
5. New or change of treatment received for itch including
antihistamines and corticosteroids (oral, IV, or topical) within
14 days prior to screening; 6. New or change of prescription for opioids, gabapentin, or
pregabalin within 14 days prior to screening;
7. Received another investigational drug within 30 days prior to
the start of screening or is planning to participate in another
clinical study while enrolled in this study;
8. In the opinion of the Investigator, has pruritus attributed to a
cause other than ESRD or its complications (eg, patients with
concomitant pruritic dermatological disease or cholestatic liver
disease) (Note: Patients whose pruritus is attributed to ESRD
complications, such as hyperparathyroidism,
hyperphosphatemia, anemia, or the dialysis procedure or
prescription may be enrolled);
9. Has localized itch restricted to the palms of the hands;
10. Has pruritus only during the dialysis session (by patient
report);
11. Is receiving ongoing ultraviolet B treatment and anticipates
receiving such treatment during the study;
12. Participated in a previous clinical study with CR845.
Study & Design
- Study Type
- Interventional clinical trial of medicinal product
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method
- Secondary Outcome Measures
Name Time Method