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Evaluating the Effect of Cromolyn Sodium in Uremic Pruritus

This study has been completed.
Information provided by:
Shiraz University of Medical Sciences Identifier:
First received: September 2, 2008
Last updated: August 17, 2009
Last verified: August 2009
Pruritus is a major disorder among the skin derangements in advanced renal failure. Recent information suggests that interactions between dermal mast cells and distal ends of nonmyelinated C fibers may be important in the precipitation and regulation of the sensory stimuli.Patients having uremic pruritus have been noted to have increased levels of plasma histamine and tryptase as well as increased numbers of dermal mast cells.Cromolyn sodium is a mast cell stabilizing agent that inhibits degranulation of mast cells and the release of histamine, tryptase, and leukotrienes. It is hypothesized that oral cromolyn sodium may attenuate uremic pruritus by decreasing serum tryptase level.

Condition Intervention Phase
End Stage Renal Disease
Drug: cromolyn sodium
Drug: placebo
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Investigator)
Primary Purpose: Treatment
Official Title: Phase II Study of the Effect of Oral Cromolyn Sodium on Uremic Pruritus and Serum Tryptase Levels of Hemodialysed Patients

Resource links provided by NLM:

Further study details as provided by Shiraz University of Medical Sciences:

Primary Outcome Measures:
  • pruritus [ Time Frame: 3 months ]

Secondary Outcome Measures:
  • serum tryptase level [ Time Frame: 4 months ]

Enrollment: 62
Study Start Date: May 2008
Study Completion Date: June 2009
Primary Completion Date: November 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
Patients on hemodialysis with pruritus, receiving cromolyn sodium
Drug: cromolyn sodium
oral cromolyn sodium, capsule 135mg, 1 capsule 3 times daily for 8 weeks
Experimental: 2
patients on hemodialysis with pruritus, receiving placebo
Drug: placebo
capsule contains 135 mg lactose, 1 capsule 3 times daily for 8 weeks
No Intervention: 3
Patients on hemodialysis but without pruritus who do not receive any treatment.


Ages Eligible for Study:   18 Years to 75 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Hemodialysis patients > 18 yo suffering from pruritus for at least 6 weeks, and who have not responded to other drugs
  • Willing and able to give informed concent

Exclusion Criteria:

  • Known dermatologic, liver, metabolic disease, or any other disease or condition other than ESRD that causes pruritus
  • Lactase deficiency
  Contacts and Locations
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Please refer to this study by its identifier: NCT00745199

Iran, Islamic Republic of
Shiraz University of Medical sciences, Nemazi and Faghihi Hospital
Shiraz, Fars, Iran, Islamic Republic of, 71345
Sponsors and Collaborators
Shiraz University of Medical Sciences
Study Director: Ghazal Vessal, PharmD, BCPS Shiraz University of Medical Sciences
Principal Investigator: Mohammad Mahdi Sagheb, MD Shiraz University of Medical Sciences
Principal Investigator: Saman Shilian, Pharm student Shiraz University of Medical Sciences
  More Information

Responsible Party: Dr.Ghazal Vessal PharmD, BCPS, Shiraz University of Medical Sciences Identifier: NCT00745199     History of Changes
Other Study ID Numbers: 4146
Study First Received: September 2, 2008
Last Updated: August 17, 2009

Keywords provided by Shiraz University of Medical Sciences:
End Stage Renal Disease
Cromolyn Sodium

Additional relevant MeSH terms:
Kidney Diseases
Kidney Failure, Chronic
Renal Insufficiency, Chronic
Urologic Diseases
Renal Insufficiency
Skin Diseases
Skin Manifestations
Signs and Symptoms
Cromolyn Sodium
Anti-Asthmatic Agents
Respiratory System Agents processed this record on May 23, 2017