Trial results
AI generated results summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI
According to the results reported on ClinicalTrials.gov, this trial enrolled 100 people in total — 53 in the treatment group (who received the S8 Sinus Implant) and 47 in the control group. Nearly all participants finished the trial (52 and 46 respectively). The trial was measuring nasal blockage symptoms and the size of nasal polyps in people with chronic sinus problems, using patient questionnaires and video camera examinations of the sinuses reviewed by independent surgeons. The reported data shows that, for the main measures, both groups started with similar scores. On a nasal congestion scale of 0–5, the treatment group began at an average of 3.62 and ended at 2.31 (a change of −1.33), while the control group began at 3.30 and ended at 2.62 (a change of −0.67). For nasal polyp size — scored on a combined scale of 0–8 by independent surgeons — the treatment group went from 4.90 to 4.12 (a change of −0.76), and the control group went from 4.39 to 4.00 (a change of −0.38). The reported data also shows that on a separate symptom questionnaire (the NOSE score, out of 100), the treatment group changed by −25.58 points and the control group by −12.22 points. For the measure of whether patients met the criteria for further sinus surgery, 25 out of 53 treatment participants and 36 out of 47 control participants were reported as meeting those criteria. These are the results as reported to ClinicalTrials.gov. They are not medical advice — always discuss what they mean for you with your doctor.
View full results on ClinicalTrials.gov ↗ · Read the linked publication on PubMed (PMID 26992115) ↗
These are the results as reported to ClinicalTrials.gov, not medical advice. Verify independently with the trial site and discuss what they mean for you with your doctor.
Phase 3 Chronic Rhinosinusitis Trial, Completed
Who may be able to join
AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI
Who might be able to join this trial:
- You are 18 years of age or older
- You have been diagnosed with chronic sinusitis (long-term inflammation of the sinuses)
- You have had surgery to remove tissue from both sides of your sinuses (called bilateral total ethmoidectomy), and this surgery was done at least 90 days ago
- You have nasal polyps growing back on both sides, rated at a certain level of severity (Grades 1–3), with at least one side rated Grade 2
- You are willing and able to follow the study requirements
- You have ongoing sinus symptoms despite using a steroid nasal spray or rinse at least once a day for at least 2 weeks before joining
- You have tried a stronger form of steroids (such as tablets, injections, or sinus rinses with steroids) in the past 2 years, or you were unable to tolerate them
- You have a history of needing repeated courses of strong steroid treatment for recurring sinusitis
- A camera examination of your sinuses shows polyps returning, scarring, or swollen tissue blocking your sinuses
- You score at least 2 out of 5 on a list of key sinus symptoms (such as nasal blockage, nasal drip, thick discharge, facial pain/pressure, or reduced sense of smell) on a standard questionnaire
- You are able to tolerate local numbing medication and a procedure done in a clinic setting
- Your doctor believes the implant or comparison procedure can be physically placed in your sinuses on both sides
- You have signed a consent form agreeing to take part
- If you are a woman who could become pregnant, you must not currently be pregnant and must agree to use reliable birth control throughout the study
Who may not be able to join:
- You had sinus surgery less than 90 days ago
- You had a Propel implant placed less than 90 days ago
- You have severe scarring or tissue bands (called adhesions) inside your sinuses, rated at Grade 3 or 4
- You have nasal polyps rated at the most severe level (Grade 4)
- You have a known immune system deficiency (such as certain antibody deficiencies or HIV)
- You are currently receiving chemotherapy or immunotherapy for a condition such as cancer or HIV
- You depend on oral steroids (steroid tablets) to manage a condition such as severe asthma or COPD
- You have a known allergy or bad reaction to corticosteroids or the specific steroid used in this study (mometasone furoate)
- You have a history of not responding well to oral steroids
- You have a physical blockage in your nose that would prevent the device from being placed (such as a severely crooked nasal wall, very small passageways, or severe scarring)
- You currently have signs of an active bacterial sinus infection (such as increased thick discharge, fever, or facial pain)
- There is suspicion or evidence of a serious fungal sinus infection
- You have a serious illness that could affect your health or ability to complete 6 months of follow-up visits
- You have taken part in another clinical trial in the last 30 days
- You have insulin-dependent diabetes
- You had a spinal fluid leak or lasting vision problems as a result of a previous sinus surgery
- Your middle turbinate (a structure inside your nose) has been completely removed
- There is a known gap or weakness in the thin bone wall near your eye socket (confirm with trial site)
- You have an active viral illness such as tuberculosis, eye herpes, chickenpox, or measles
- You have been diagnosed with glaucoma or high pressure in your eyes
- You have a specific type of eye angle problem (closed-angle condition) (confirm with trial site)
- You have certain types of cataracts rated at a moderate-to-severe level in either eye
Important: Always verify eligibility with the trial site directly before applying.
Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.
GP referral letter
Print a one-page summary to share with your doctor.
Trial details
Where this trial is recruiting
Primary endpoints
Nasal Obstruction/Congestion Score; Bilateral Polyp Grade
Can't join this trial?
Data last synced from ClinicalTrials.gov: 28 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.