Facial ParalysisNCT05585333
Photobiomodulation Therapy Treatment on Facial Paralysis
A study testing MLS laser in people with Facial Paralysis, run by Beijing Tongren Hospital at 1 site in China.
Trial summary
Objective: Facial paralysis can be caused by a variety of etiological factors, complete palsy continues for two months, the chance of full recovery is reduced to zero. The aim of this study was to evaluate the effectiveness of photobiomodulation therapy (PBMT) in the in patients undergoing facial paralysis over 8… Read more about this study
- Who is it for?
- Ages 18 to 60 years
- Conditions the study is for
- Facial Paralysis
- What is being tested?
- MLS laser
- Type of treatment
- Injection or infusion, Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 54 participants
- Where
- 1 siteChina
- Study dates
- 1 Jan 2021to 1 May 2022
- 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 60 years
- All sexes
- No healthy volunteers
- Adult
Who may be able to join
- (1) adults over 18 years of age and under 65 years of age. (2) had not received medicine, such as prednisolone. (3) had history of Bell's palsy, Ramsay Hunt syndrome, traumatic facial paralysis and history of otological surgery.
- Disease duration longer than two months.
Who cannot join
- (1) Complete facial paralysis (HB 6). (2) Greater than 90% denervation on ENoG. (3) No voluntary EMG activity. (4) No latency of early (R1) and late (R2, R2') components in blink reflex. (5) Serious mental illness or social problems, and neurological disorders. (6) Systemic disease, such as severe diabetes, malignant tumors and other serious consumptive diseases.
- Planning for pregnancy, in pregnancy or lactation.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Photobiomodulation Therapy for Facial Paralysis Over 8 Weeks: An Open-Label Pilot, Non-concurrent Control Study
Objective: Facial paralysis can be caused by a variety of etiological factors, complete palsy continues for two months, the chance of full recovery is reduced to zero. The aim of this study was to evaluate the effectiveness of photobiomodulation therapy (PBMT) in the in patients undergoing facial paralysis over 8 weeks.
Methods: This study was an open-label, not concurrent control study including 54 patients that underwent facial paralysis over 8 weeks. Patients were assigned to the PBMT group and control group, with 27 patients in each group. Laser treatments were applied 3 days a week after recruited. PBMT was delivered using a class IV Multi-wave Locked System that combines with a simultaneous 808 nm continuous emission and 905 nm pulse emission and the maximum peak power was 25 W. Clinical outcome measure comprised the House-Brackmann grading system, Facial Clinimetric Evaluation Scale (FaCE), Sunnybrook facial grading scale (SBFG), and electrophysiological testing, including Electroneuronography (ENoG), Electromyography (EMG) and Blink Reflex. All the measurements were collected at the first day and at the end of study. All reported P values were two-sided and were declared statistically significant when less than 0.05.
- Conditions
- Facial Paralysis
- Being tested
- MLS laser
- Keywords
- Facial paralysis, photobiomodulation, ENoG, EMG, HB grading
- Medical subject headings
- Facial Paralysis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
MLS laserDevice
Treatments were performed with MLS laser (Mphi laser, ASA Srl, Italy). MLS laser is a class IV NIR laser with two synchronized sources (laser diodes). The first one is a pulsed laser diode, emitting at 905 nm, with 25 W peak power. The second laser diode (808 nm) was operated in a continuous mode with power 1 W. Both of the laser beams were synchronized, the locked waves work within the range 1-2000 Hz.
| Study group | Role | What they receive |
|---|---|---|
| Photobiomodulation Group | Experimental | Treatments were performed with MLS laser (Mphi laser, ASA Srl, Italy). MLS laser is a class IV NIR laser with two synchronized sources (laser diodes). The first one is a pulsed laser diode, emitting at 905 nm, with 25 W peak power. The second laser diode (808 nm) was operated in a continuous mode with power 1 W. Both of the laser beams were synchronized, the locked waves work within the range 1-2000 Hz. Receives: Device: MLS laser |
| Control Group | No intervention | Not described |
What is being measured
The primary outcome is the main question the study is designed to answer.
The House-Brackmann Facial Nerve Grading System
The House-Brackmann facial nerve grading system (HB grading) is based on a 6-grade score that offers a gross evaluation of facial motor function and includes the evaluation of sequelae. The prognoses of patients with House-Brackmann grade I or grade II were considered good, and the prognoses of those with grade 3 or higher were considered poor.
Measured: Change from Baseline number of pathological HB grading at 6-months in post-therapy.
The Sunnybrook Facial Grading System
The Sunnybrook facial grading system (SB grading) is 13-items, self-reported questionnaire that used to evaluate the facial movement of patients. Among the overall 13 items of question, 3 items are resting symmetry, 5 items are symmetry of voluntary movement, and 5 items are synkinesis. Lower scores of Sunnybrook equate to greater severity of facial paralysis symptoms.
Measured: Change from Baseline scores of SB grading at at 6-months in post-therapy.
Facial Clinimetric Evaluation Scale
The Facial Clinimetric Evaluation Scale (FaCE) is 15-items, self-reported questionnaire that used to assess facial impairment and disability after facial paralysis. Among the overall 15 items of question, FaCE grouped into six independent domains: social function, facial movement, facial comfort, oral function, eye comfort, and lacrimal control. Each using a five-item Likert scale. A participant circles the most appropriate response to a given statement, whereby 1 corresponds to the lowest function and 5 corresponds to the highest function. The total score is ranged 0 (worst) to 100 (best).
Measured: Change from Baseline scores of FaCE at at 6-months in post-therapy.
Secondary outcomes (3)
Electroneuronography (ENoG)
The goal of the Electroneurography (ENoG) testing is to measure the amount of neural degradation that has occurred distal to the site of facial nerve injury by measuring the muscle response to an electrical stimulus. The testing of ENoG involves recording the compound muscle action potential (CAMP) of the mimetic muscles, including Orbicularis oculi, Frontalis muscle, Orbicularis oris and Zygomaticus muscle.
ENoG is performed first on the healthy side of the face and then on the affected side. Nerve damage or nerve fiber degeneration leads to a decrease or loss of the CAMP. The amplitude of the CAMP on the affected side is compared to the CAMP of the healthy side and expressed as percent (amplitude of the paralyzed side divided by the amplitude of the normal side). A side difference of 30% or bigger is considered pathologic.
Measured: Change from Baseline amplitude and potential of CAMP and the numbers of pathological ENoG at at 6-months in post-therapy.
Electromyography (EMG)
EMG is an electrophysiologic measures that indirectly quantify facial nerve function by recording motor unit action potentials (MUAPs) in the muscle of Musculus depressor angulli oris, Frontalis muscle and Orbicularis oris. MUAPs are the spikes in electrical activity generated when a motor unit fires. A motor unit consists of a motor neuron and the corresponding muscle fibers innervated by the neuron.
Measured: Change from Baseline amplitude and duration of MUAPs at at 6-months in post-therapy.
Blink Reflex
The blink reflex test is to measures the facial nerve since the blink reflex delivers information on facial nerve function with normal trigeminal function. Blink reflex testing involves electrical stimulation of the supraorbital nerve on the affected side combined with a 2-channel simultaneous sEMG recording from both orbicularis oculi muscles. The exit of the supraorbital nerve in the supraorbital foramen is palpated on the rim of the orbit. Stimulation with 10-20 mA and 0.2 ms duration is used to produce a constant reflex.
In blink reflex testing, two responses, R1 and R2, are analyzed. R1 is the fast ipsilateral response of the orbicularis oculi muscle with a latency of about 10-12 ms. The second bilateral response R2 has a latency of about 30-41 ms.
The R2 latency differences between both sides higher than 5-8 ms is considered pathologic.
Measured: Change from Baseline number of pathological Blink Reflex at 6-months in post-therapy.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 Oct 2022
- Study start1 Jan 2021
- Primary completion1 Jan 2022
- Study completion1 May 2022
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Facial ParalysisStudies of the same condition, open and under way.
- More trials run by Beijing Tongren HospitalThe sponsor's other registered studies.
- 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
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 54 participants (actual)
Sponsor and investigators
- Lead sponsor
- Beijing Tongren Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05585333
- Sponsor's protocol ID
- PBMT-FP-2022
- Status last verified
- Feb 2022
- First submitted
- 14 Oct 2022
- Last updated
- 9 Nov 2022
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
Wu D, Zhao YL, Sun JY, Dai RJ, Cao K, Qu RK, Wang Y, Wu YQ. A Nonrandomized Trial of the Effects of Near-Infrared Photobiomodulation Therapy on Bell's Palsy with a Duration of Greater Than 8 Weeks. Photobiomodul Photomed Laser Surg. 2023 Sep;41(9):490-500. doi: 10.1089/photob.2023.0056.
PubMed 37738368
Study at a glance
From the registry record, last updated by the sponsor on 9 Nov 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Photobiomodulation Therapy for Facial Paralysis Over 8 Weeks: An Open-Label Pilot, Non-concurrent Control Study
- ClinicalTrials.gov ID
- NCT05585333
- Acronym / sponsor ID
- PBMT-FP-2022
- Conditions
- Facial Paralysis
- Keywords
- Facial paralysis, photobiomodulation, ENoG, EMG, HB grading
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 54 participants (actual)
- Lead sponsor
- Beijing Tongren HospitalUniversity, hospital or other
- Study start
- 1 Jan 2021 (actual)
- Primary completion
- 1 Jan 2022 (actual)
- Study completion
- 1 May 2022 (actual)
- First posted
- 18 Oct 2022 (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.
Objective: Facial paralysis can be caused by a variety of etiological factors, complete palsy continues for two months, the chance of full recovery is reduced to zero. The aim of this study was to evaluate the effectiveness of photobiomodulation therapy (PBMT) in the in patients undergoing facial paralysis over 8 weeks.
Methods: This study was an open-label, not concurrent control study including 54 patients that underwent facial paralysis over 8 weeks. Patients were assigned to the PBMT group and control group, with 27 patients in each group. Laser treatments were applied 3 days a week after recruited. PBMT was delivered using a class IV Multi-wave Locked System that combines with a simultaneous 808 nm continuous emission and 905 nm pulse emission and the maximum peak power was 25 W. Clinical outcome measure comprised the House-Brackmann grading system, Facial Clinimetric Evaluation Scale (FaCE), Sunnybrook facial grading scale (SBFG), and electrophysiological testing, including Electroneuronography (ENoG), Electromyography (EMG) and Blink Reflex. All the measurements were collected at the first day and at the end of study. All reported P values were two-sided and were declared statistically significant when less than 0.05.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Photobiomodulation Group | Experimental | Device: MLS laserTreatments were performed with MLS laser (Mphi laser, ASA Srl, Italy). MLS laser is a class IV NIR laser with two synchronized sources (laser diodes). The first one is a pulsed laser diode, emitting at 905 nm, with 25 W peak power. The second laser diode (808 nm) was operated in a continuous mode with power 1 W. Both of the laser beams were synchronized, the locked waves work within the range 1-2000 Hz. |
| Control Group | No intervention | – |
Who may qualify
- Ages
- 18 to 60 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult
Key inclusion criteria (2 listed)
- (1) adults over 18 years of age and under 65 years of age. (2) had not received medicine, such as prednisolone. (3) had history of Bell's palsy, Ramsay Hunt syndrome, traumatic facial paralysis and history of otological surgery.
- Disease duration longer than two months.
Key exclusion criteria (2 listed)
- (1) Complete facial paralysis (HB 6). (2) Greater than 90% denervation on ENoG. (3) No voluntary EMG activity. (4) No latency of early (R1) and late (R2, R2') components in blink reflex. (5) Serious mental illness or social problems, and neurological disorders. (6) Systemic disease, such as severe diabetes, malignant tumors and other serious consumptive diseases.
- Planning for pregnancy, in pregnancy or lactation.
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 |
|---|---|---|
| MLS laserTreatments were performed with MLS laser (Mphi laser, ASA Srl, Italy). MLS laser is a class IV NIR laser with two synchronized sources (laser diodes). The first one is a pulsed laser diode, emitting at 905 nm, with 25 W peak power. The second laser diode (808 nm) was operated in a continuous mode with power 1 W. Both of the laser beams were synchronized, the locked waves work within the range 1-2000 Hz. | Device | Photobiomodulation Group |
Primary outcome
The House-Brackmann Facial Nerve Grading System
Time frame: Change from Baseline number of pathological HB grading at 6-months in post-therapy.
The House-Brackmann facial nerve grading system (HB grading) is based on a 6-grade score that offers a gross evaluation of facial motor function and includes the evaluation of sequelae. The prognoses of patients with House-Brackmann grade I or grade II were considered good, and the prognoses of those with grade 3 or higher were considered poor.
The Sunnybrook Facial Grading System
Time frame: Change from Baseline scores of SB grading at at 6-months in post-therapy.
The Sunnybrook facial grading system (SB grading) is 13-items, self-reported questionnaire that used to evaluate the facial movement of patients. Among the overall 13 items of question, 3 items are resting symmetry, 5 items are symmetry of voluntary movement, and 5 items are synkinesis. Lower scores of Sunnybrook equate to greater severity of facial paralysis symptoms.
Facial Clinimetric Evaluation Scale
Time frame: Change from Baseline scores of FaCE at at 6-months in post-therapy.
The Facial Clinimetric Evaluation Scale (FaCE) is 15-items, self-reported questionnaire that used to assess facial impairment and disability after facial paralysis. Among the overall 15 items of question, FaCE grouped into six independent domains: social function, facial movement, facial comfort, oral function, eye comfort, and lacrimal control. Each using a five-item Likert scale. A participant circles the most appropriate response to a given statement, whereby 1 corresponds to the lowest function and 5 corresponds to the highest function. The total score is ranged 0 (worst) to 100 (best).
3 secondary outcomes
Electroneuronography (ENoG)
Time frame: Change from Baseline amplitude and potential of CAMP and the numbers of pathological ENoG at at 6-months in post-therapy.
Electromyography (EMG)
Time frame: Change from Baseline amplitude and duration of MUAPs at at 6-months in post-therapy.
Blink Reflex
Time frame: Change from Baseline number of pathological Blink Reflex at 6-months in post-therapy.
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 9 Nov 2022.
- Derived from this study: PubMed 37738368Wu D, Zhao YL, Sun JY, Dai RJ, Cao K, Qu RK, Wang Y, Wu YQ. A Nonrandomized Trial of the Effects of Near-Infrared Photobiomodulation Therapy on Bell's Palsy with a Duration of Greater Than 8 Weeks. Photobiomodul Photomed Laser Surg. 2023 Sep;41(9):490-500. doi: 10.1089/photob.2023.0056.
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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 MLS laser in people with Facial Paralysis, run by Beijing Tongren Hospital 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 2 inclusion and 2 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 9 Nov 2022. 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?
The House-Brackmann Facial Nerve Grading System (time frame: Change from Baseline number of pathological HB grading at 6-months in post-therapy.). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT05585333, which also lists 1 linked publication.
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 9 Nov 2022.