Overview

The Effect of Intra-anal Nifedipine, Used As Add-on to Conservative Therapy, on Pain in Patients With Anal Fissure

Status:
Completed
Trial end date:
2018-08-22
Target enrollment:
0
Participant gender:
All
Summary
The objective of the study is to examine the effect of Nifedipine, applied intra-anally through our drug delivery device, on rectal pain severity in anal fissure patients that are being managed with conservative treatment.
Phase:
Phase 2/Phase 3
Accepts Healthy Volunteers?
No
Details
Lead Sponsor:
RDD Pharma Ltd
Treatments:
Nifedipine
Criteria
Inclusion Criteria:

- Subjects meeting the following criteria will be eligible to participate in the trial:

1. Single anal fissure;

2. Signed written informed consent;

3. Male or female subjects 18 to 65 years of age inclusive;

4. Has chronic anal fissure defined as history of rectal pain at least three days a week
for at least 6 weeks - or more AND at least one of the following:

- Sentinel skin tag

- Hypertrophied anal papilla

- Exposure of the underlying internal anal sphincter

- Anal cicatrisation

5. Visual analogue scale of average 24 hours rectal pain (VAS) of > 40 mm in screening
visit

6. Capable of using the IVRS and able to adequately communicate comprehension of the IVRS
questions to the investigator

7. If female, is non-lactating, has a negative urine pregnancy test result, and does not
plan on becoming pregnant during the study, or not of childbearing potential
(hysterectomy or tubal ligation at least 6 months prior to entry to the study or
post-menopausal for 1 year); if of childbearing potential (including peri-menopausal
women who have had a menstrual period within one year) must practice or be willing to
continue to practice acceptable birth control from screening and until 1 week after
the study medication has been discontinued.

Acceptable birth control includes :

- combined (estrogen and progestogen containing) hormonal contraception

- associated with inhibition of ovulation; oral OR intravaginal OR transdermal.

- progestogen-only hormonal contraception associated with inhibition of ovulation: oral
OR injectable OR implantable.

- progestogen-only oral hormonal contraception, where inhibition of ovulation is not the
primary mode of action

- intrauterine device (IUD)

- intrauterine hormone-releasing system ( IUS)

- bilateral tubal occlusion

- vasectomised partner

- sexual abstinence

- male or female condom with or without spermicide

- cap, diaphragm or sponge with spermicide

Exclusion Criteria:

- Subjects are excluded from participation in the study if any of the following criteria
apply:

1. Known allergy to Nifedipine

2. Unwilling to stop all other concomitant topical preparations applied in and
around the anus from screening through the end of the study

3. Subfissure injection of botulinum toxin in the 3 months prior to screening.

4. Fissure resulting from inflammatory bowel disease, venereal disease, perianal
psoriasis, immunodeficiency syndrome

5. Atypical fissure (occurs off the midline) in which secondary causes were not
excluded.

6. Deemed by the investigator as anal fissure for which surgery is indicated

7. Anal abscess;

8. Grade 4 hemorrhoids

9. Fixed anal stenosis

10. Active or past history of cardiovascular or cerebrovascular disease including but
not limited to angina pectoris, myocardial infarction, transient ischemic
attacks/stroke, arrhythmia or ecg changes that requires medical treatment or
deemed by the investigator as clinically significant, moderate to severe
congestive heart failure, or cardiac valve abnormalities;

11. Type 1 diabetes mellitus

12. Insulin treated type 2 diabetes mellitus

13. Renal failure defined as a serum creatinine > 1.5 mg/dL (133 µmol/L) at screening

14. Liver disease defined as Aspartate aminotransferase (AST) or alanine
aminotransferase(ALT) >2 X upper limit of normal at screening

15. Malignant disease within 3 years of screening

16. Has uncontrolled hypertension (sitting blood pressure >160/95 mmHg at screening)

17. Has hypotension (blood pressure lower than 90/60 mm Hg at screening)

18. History of chronic gastrointestinal disease such as Crohn's disease or ulcerative
colitis

19. History of major rectal surgery

20. History of HIV, Hepatitis B, Hepatitis C

21. Has clinical laboratory test values (chemistry, hematology, or urinalysis) judged
to be clinically significant by the investigator at screening;

22. Has used, in the last two weeks, drugs that may affect blood coagulation, such as
Aspirin at a dose higher than 500 mg/day, Warfarin, Sintrom, Enoxaparin,
Nadroparin, Heparin, Clopidogrel, Ticlopidine Rivaroxaban, Apixaban, Edoxaban

23. Is treated with drugs that may affect the anal sphincter:

1. Calcium channel blockers such as Nifedipine, Diltiazem or Verapamil

2. Nitroglycerin or nitrates

24. Has, upon physical examination, a rectal deformation or signs of rectal disease
such as fistula, infection or space occupying lesion;

25. Participated in a clinical study in the last 30 days prior to screening.

26. Is an immediate family member of personnel directly affiliated with the study at
the investigative site, or is personally directly affiliated with the study at
the investigative site; or is employed or related to the Sponsor, CRO or
investigator;