Table of contents
- Clinical trials overview
- Vulvar lichen sclerosus study
- Chronic kidney disease-associated pruritus study
- Study design and comparators
- Outcomes and endpoints
- What participants were like
Clinical trials overview
Two interventional studies investigated Alanyl Glutamine in people with itching-related conditions.[1][2] Both trials were Phase 2 and both were marked as completed.[1][2]
The studies looked at whether the tested cream could help reduce itch compared with a cream base without the active substance, also called a vehicle.[1][2] The main focus was patient-reported itch relief over 12 weeks.[1][2]
Vulvar lichen sclerosus study
The trial titled Orchid 1 studied people with vulvar lichen sclerosus, a long-term skin condition that affects the vulvar area and can cause severe itching.[1] This study enrolled 40 participants and was done as a Phase 2 trial.[1]
Participants received either Alanyl Glutamine as a topical cream or a matching cream without the active substance.[1] The study was designed to explore efficacy, which means whether the treatment may help improve symptoms.[1]
The main endpoint was the mean change in weekly mean Worst Itch Numeric Rating Score (WI-NRS) from baseline to Week 12.[1] WI-NRS is a patient diary score used to measure how bad the itching feels.[1]
Chronic kidney disease-associated pruritus study
The second trial studied adults with chronic kidney disease-associated pruritus, which means itching linked to chronic kidney disease.[2] It enrolled 108 participants and was also a Phase 2 study.[2]
This study was a parallel-group, randomized, double-blind, 12-week trial.[2] Randomized means people were assigned by chance to a study group, and double-blind means neither the participants nor the researchers knew which treatment was given.[2]
Participants received either Alanyl Glutamine cutaneous use or a placebo-like cream that did not contain the active substance.[2] The study aimed to explore the clinical efficacy and safety of the cream compared with the vehicle.[2]
Study design and comparators
Both studies compared Alanyl Glutamine with a vehicle, which is the same cream without the active substance.[1][2] In the kidney disease study, the comparison product was also described as a placebo that did not contain the active substance.[2]
This type of design helps researchers see whether any change in itching is more likely due to the tested treatment rather than the cream base itself.[1][2] The 12-week study length gave enough time to measure symptom changes over time.[1][2]
Outcomes and endpoints
The main outcome in both trials was the change in Worst Itch Numeric Rating Score from the start of the study to Week 12.[1][2] This endpoint was recorded in the participant’s diary, making the patient’s own report of symptoms very important.[1][2]
In simple terms, the trials were asking whether people felt less itching after using the study cream for 12 weeks compared with the control cream.[1][2] The source data did not list other detailed endpoints, so the itch score is the key result described here.[1][2]
What participants were like
The trial data show that the studies focused on adults with a specific itching condition.[1][2] One group had vulvar lichen sclerosus, and the other group had chronic kidney disease-associated pruritus.[1][2]
These studies did not provide extra details about age ranges, sex limits, or other entry rules beyond the conditions studied.[1][2] What is clear is that the research was aimed at people whose main problem was persistent itch.[1][2]




