Chronic RhinitisHA35NCT07568548
Efficacy and Safety of High-Concentration 35 kDa Hyaluronan Gel for Chronic Nasopharyngitis
A study testing 13.6% High-Concentration 35 kDa Hyaluronan (HA35) Nasopharyngeal Care Gel in people with Chronic Rhinitis and Chronic Pharyngitis, run by Nakhia Impex LLC at 1 site in China.
Trial summary
This is a prospective, single-arm, open-label, pilot clinical study to evaluate the efficacy and safety of nasopharyngeal administration of 13.6% high-concentration 35 kDa hyaluronan (HA35) care gel in subjects with chronic rhinitis and chronic pharyngitis. Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Chronic Rhinitis, Chronic Pharyngitis, Nasopharyngitis
- What is being tested?
- 13.6% High-Concentration 35 kDa Hyaluronan (HA35) Nasopharyngeal Care Gel
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 30 participants
- Where
- 1 siteChina
- Study dates
- 1 May 2026to 1 Jul 2026
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Age 18-80 years, male or female
- Clinically diagnosed with chronic rhinitis and chronic pharyngitis for ≥3 months
- Baseline nasopharyngeal discomfort NRS score ≥4 points
- Baseline posterior pharyngeal discomfort NRS score ≥4 points
- Voluntary participation and signed written informed consent
- Ability to complete symptom assessment independently
Who cannot join
- Acute upper respiratory tract infection within 2 weeks
- Use of antihistamines, intranasal corticosteroids, decongestants, or other nasal medications within 2 weeks prior to screening
- History of nasal/sinus surgery within 6 months
- Known hypersensitivity to hyaluronan or any gel ingredients
- Pregnant or lactating women
- Severe systemic diseases or malignant tumors
Trial locations and contacts
1 site in 1 country.
About this study
Official title: A Prospective, Single-Arm, Open-Label Pilot Clinical Study to Evaluate Efficacy and Safety of Topical 10% 35 kDa Hyaluronan (HA35) Gel for Ultra-Rapid Relief of Skin Pruritus
This is a prospective, single-arm, open-label, pilot clinical study to evaluate the efficacy and safety of nasopharyngeal administration of 13.6% high-concentration 35 kDa hyaluronan (HA35) care gel in subjects with chronic rhinitis and chronic pharyngitis. Eligible participants will receive the study gel twice daily for 10 consecutive days. The primary objectives are to assess rapid changes in nasopharyngeal discomfort, posterior pharyngeal discomfort, and nasal obstruction within 30 minutes after the first administration. Secondary objectives include evaluation of overall symptom improvement at day 10, changes in subjective mental clarity, and safety and tolerability throughout the treatment period. This is a minimal-risk, non-pharmacological supportive care intervention.
Read the detailed description
This prospective, single-center, single-arm, open-label pilot clinical study is designed to investigate the efficacy and safety of a 13.6% high-concentration 35 kDa hyaluronan (HA35) nasopharyngeal care gel for the management of chronic rhinitis and chronic pharyngitis.
Participants meeting all eligibility criteria will receive the HA35 gel via nasopharyngeal administration, one unit per nostril, twice daily (morning and evening) for 10 consecutive days.
Symptom assessments will be performed at baseline, 30 minutes after the first administration, 1, 2, and 3 hours after the first morning dose, and on day 10. Assessments include numeric rating scales (NRS) for nasopharyngeal discomfort, posterior pharyngeal discomfort and cough, nasal airflow obstruction, overall rhinitis and pharyngitis symptom severity, and subjective mental clarity.
Safety evaluations will monitor all adverse events, local tolerability, and any unexpected reactions throughout the study period.
This study involves a non-invasive, non-pharmacological non-drug intervention with minimal risk to participants. All procedures will be conducted in accordance with the Declaration of Helsinki, and written informed consent will be obtained from all subjects prior to enrollment.
- Conditions
- Chronic Rhinitis, Chronic Pharyngitis, Nasopharyngitis, Posterior Pharyngeal Inflammation, Nasal Obstruction
- Being tested
- 13.6% High-Concentration 35 kDa Hyaluronan (HA35) Nasopharyngeal Care Gel
- Keywords
- Hyaluronan, 35 kDa Hyaluronan, HA35, Nasopharyngeal Care, Chronic Rhinitis, Chronic Pharyngitis, Nasal Congestion, Pharyngeal Discomfort, Non-pharmacological Intervention, Pilot Clinical Study
- Medical subject headings
- Nasopharyngitis, Nasal Obstruction
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
13.6% High-Concentration 35 kDa Hyaluronan (HA35) Nasopharyngeal Care GelDevice
Also called HA35 Nasopharyngeal Gel; HA35 Care Gel
A topical, non-pharmacological nasopharyngeal care gel containing 13.6% high-concentration 35 kDa hyaluronan. It is designed to support mucosal hydration and reduce inflammation in the nasopharynx. Administration is via direct nasopharyngeal application, twice daily for 10 consecutive days.
| Study group | Role | What they receive |
|---|---|---|
| HA35 Nasopharyngeal Care Gel Intervention Group | Experimental | Participants will receive 13.6% high-concentration 35 kDa hyaluronan (HA35) nasopharyngeal care gel, administered via the nasopharyngeal route, one unit per nostril, twice daily (morning and evening) for 10 consecutive days. The intervention is non-pharmacological and designed to evaluate efficacy and safety in subjects with chronic rhinitis and chronic pharyngitis. Receives: Device: 13.6% High-Concentration 35 kDa Hyaluronan (HA35) Nasopharyngeal Care Gel |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in Posterior Pharyngeal Discomfort and Cough NRS Score (0-10)
Change in posterior pharyngeal discomfort and associated cough intensity, measured using a 0-10 Numeric Rating Scale (NRS), where 0 = no discomfort/cough and 10 = worst imaginable discomfort/cough.
Measured: Baseline to 30 minutes after first administration
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted5 May 2026
- Study start1 May 2026
- Primary completion1 Jun 2026
- Study completion1 Jul 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Chronic RhinitisStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Supportive care
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 30 participants (actual)
Sponsor and investigators
- Lead sponsor
- Nakhia Impex LLC
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07568548
- Sponsor's protocol ID
- HA35202601
- Acronym
- HA35
- Status last verified
- Sep 2026
- First submitted
- 28 Apr 2026
- Last updated
- 23 Sep 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 23 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Prospective, Single-Arm, Open-Label Pilot Clinical Study to Evaluate Efficacy and Safety of Topical 10% 35 kDa Hyaluronan (HA35) Gel for Ultra-Rapid Relief of Skin Pruritus
- ClinicalTrials.gov ID
- NCT07568548
- Acronym / sponsor ID
- HA35 / HA35202601
- Conditions
- Chronic Rhinitis, Chronic Pharyngitis, Nasopharyngitis, Posterior Pharyngeal Inflammation, Nasal Obstruction
- Keywords
- Hyaluronan, 35 kDa Hyaluronan, HA35, Nasopharyngeal Care, Chronic Rhinitis, Chronic Pharyngitis, Nasal Congestion, Pharyngeal Discomfort
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 30 participants (actual)
- Lead sponsor
- Nakhia Impex LLCIndustry (pharma, biotech, devices)
- Study start
- 1 May 2026 (actual)
- Primary completion
- 1 Jun 2026 (actual)
- Study completion
- 1 Jul 2026 (actual)
- First posted
- 5 May 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This is a prospective, single-arm, open-label, pilot clinical study to evaluate the efficacy and safety of nasopharyngeal administration of 13.6% high-concentration 35 kDa hyaluronan (HA35) care gel in subjects with chronic rhinitis and chronic pharyngitis. Eligible participants will receive the study gel twice daily for 10 consecutive days. The primary objectives are to assess rapid changes in nasopharyngeal discomfort, posterior pharyngeal discomfort, and nasal obstruction within 30 minutes after the first administration. Secondary objectives include evaluation of overall symptom improvement at day 10, changes in subjective mental clarity, and safety and tolerability throughout the treatment period. This is a minimal-risk, non-pharmacological supportive care intervention.
Detailed description
This prospective, single-center, single-arm, open-label pilot clinical study is designed to investigate the efficacy and safety of a 13.6% high-concentration 35 kDa hyaluronan (HA35) nasopharyngeal care gel for the management of chronic rhinitis and chronic pharyngitis.
Participants meeting all eligibility criteria will receive the HA35 gel via nasopharyngeal administration, one unit per nostril, twice daily (morning and evening) for 10 consecutive days.
Symptom assessments will be performed at baseline, 30 minutes after the first administration, 1, 2, and 3 hours after the first morning dose, and on day 10. Assessments include numeric rating scales (NRS) for nasopharyngeal discomfort, posterior pharyngeal discomfort and cough, nasal airflow obstruction, overall rhinitis and pharyngitis symptom severity, and subjective mental clarity.
Safety evaluations will monitor all adverse events, local tolerability, and any unexpected reactions throughout the study period.
This study involves a non-invasive, non-pharmacological non-drug intervention with minimal risk to participants. All procedures will be conducted in accordance with the Declaration of Helsinki, and written informed consent will be obtained from all subjects prior to enrollment.
Study design
- Primary purpose
- Supportive care
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| HA35 Nasopharyngeal Care Gel Intervention Group | Experimental | Device: 13.6% High-Concentration 35 kDa Hyaluronan (HA35) Nasopharyngeal Care GelParticipants will receive 13.6% high-concentration 35 kDa hyaluronan (HA35) nasopharyngeal care gel, administered via the nasopharyngeal route, one unit per nostril, twice daily (morning and evening) for 10 consecutive days. The intervention is non-pharmacological and designed to evaluate efficacy and safety in subjects with chronic rhinitis and chronic pharyngitis. |
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- Age 18-80 years, male or female
- Clinically diagnosed with chronic rhinitis and chronic pharyngitis for ≥3 months
- Baseline nasopharyngeal discomfort NRS score ≥4 points
- Baseline posterior pharyngeal discomfort NRS score ≥4 points
- Voluntary participation and signed written informed consent
Key exclusion criteria (6 listed)
- Acute upper respiratory tract infection within 2 weeks
- Use of antihistamines, intranasal corticosteroids, decongestants, or other nasal medications within 2 weeks prior to screening
- History of nasal/sinus surgery within 6 months
- Known hypersensitivity to hyaluronan or any gel ingredients
- Pregnant or lactating women
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| 13.6% High-Concentration 35 kDa Hyaluronan (HA35) Nasopharyngeal Care GelAlso: HA35 Nasopharyngeal Gel; HA35 Care GelA topical, non-pharmacological nasopharyngeal care gel containing 13.6% high-concentration 35 kDa hyaluronan. It is designed to support mucosal hydration and reduce inflammation in the nasopharynx. Administration is via direct nasopharyngeal application, twice daily for 10 consecutive days. | Device | HA35 Nasopharyngeal Care Gel Intervention Group |
Primary outcome
Change in Posterior Pharyngeal Discomfort and Cough NRS Score (0-10)
Time frame: Baseline to 30 minutes after first administration
Change in posterior pharyngeal discomfort and associated cough intensity, measured using a 0-10 Numeric Rating Scale (NRS), where 0 = no discomfort/cough and 10 = worst imaginable discomfort/cough.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 23 Sep 2026.
Related trials for Chronic Rhinitis
Not yet recruitingPhase 1
Safety and Tolerability of Fluticasone Propionate 10% Nasal Insert in Participants With Chronic Allergic Rhinitis
Chronic Allergic Rhinitis
RecruitingObservational study
A Study to Evaluate Treating Watery Noses With Cryotherapy in the Clinic Setting. This is Cold Therapy, Freezing the Issues at the Back of the Nose to Ease Symptoms.
Chronic Rhinitis
Active, not recruitingPhase 3
A Study to Investigate Changes in Symptoms in Adult Participants With Chronic Rhinosinusitis With Nasal Polyposis Initiating Treatment With Tezepelumab
Chronic Rhinosinusitis With Nasal Polyps
Not yet recruiting
Validating Blinding Maintenance of a Sham-Sensitization Control Design for Sensitization Acupuncture Trials
Knee Osteoarthritis; Insomnia; Cervical Spondylosis; Chronic Low Back Pain; Allergic Rhinitis
RecruitingObservational study
The Epidemiological and Intrinsic Characteristics of Chronic Rhinitis
Chronic Rhinitis
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing 13.6% High-Concentration 35 kDa Hyaluronan (HA35) Nasopharyngeal Care Gel in people with Chronic Rhinitis and Chronic Pharyngitis, run by Nakhia Impex LLC at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 23 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change in Posterior Pharyngeal Discomfort and Cough NRS Score (0-10) (time frame: Baseline to 30 minutes after first administration). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 23 Sep 2026.