ClinicalTrials.gg
WithdrawnNCT05097079Updated Sep 19, 2024

Efficacy and Safety Study of MYOBLOC in the Treatment of Sialorrhea in Pediatric Subjects

A Phase 3 interventional study of MYOBLOC Low Dose and MYOBLOC High Dose in Sialorrhea, sponsored by Solstice Neurosciences, LLC, a subsidiary of MDD US Operations, LLC. Withdrawn. Open to participants aged 3 Years to 17 Years. Per ClinicalTrials.gov, last updated 2024-09-19.

Sponsored by Solstice Neurosciences, LLC, a subsidiary of MDD US Operations, LLC (part of Supernus Pharmaceuticals, Inc.) · Phase 3, Interventional, and Treatment

Why this study was withdrawn
Company/sponsor business decision
Phase
Phase 3
Study type
Interventional
Enrollment
0
Allocation
Randomized
Ages
3 Years to 17 Years
Sex
All
01

Study summary

This study will evaluate the efficacy and safety of MYOBLOC for the treatment of chronic sialorrhea in pediatric subjects.

Read the detailed description

This is a multicenter, randomized, double-blind, placebo-controlled, single treatment study designed to assess the efficacy, safety, and tolerability of 2 dose levels of MYOBLOC vs placebo for the treatment of chronic sialorrhea in pediatric subjects ages 3 to \< 17 years. Eligible subjects will be randomized 1:1:1 to receive single treatment of the low dose of MYOBLOC (60 Units/kg), the high dose of MYOBLOC (100 Units/kg), or volume-matched placebo via intraglandular injection.

02

Conditions studied

  • Sialorrhea

Browse trials for

03

In context

Sialorrhea

60 studies on the registry are indexed under Sialorrhea; 5 are open to participants now.

Browse Sialorrhea studies →

Lead sponsor

Solstice Neurosciences, LLC, a subsidiary of MDD US Operations, LLC is the lead sponsor of 3 studies on the registry; none are open to participants now.

First submitted after Solstice Neurosciences, LLC became part of Supernus Pharmaceuticals, Inc..

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
3 Years to 17 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Written obtained from the subject's parent or legally authorized representative(s) (LAR)/guardian(s) in accordance with local laws and Institutional Review Board (IRB)/Independent Ethics Committee (IEC) requirements.
  2. Written minor assent obtained from the subject, as applicable and in accordance with local laws and IRB/IEC requirements.
  3. Male or female ages 3 to \< 17 years at the time of signing informed consent (and assent, if applicable) at Screening.
  4. Minimum weight of 10 kg at Screening and Baseline (prior to randomization).
  5. Chronic sialorrhea due to a neurological disorder (e.g., cerebral palsy (CP), or traumatic brain injury (TBI)) for at least 3 months prior to Screening.
  6. A mTDS score ≥ 5 at Screening and Baseline (prior to randomization).
  7. A minimum USFR of 0.2 g/min at Screening and Baseline (prior to randomization).
  8. Females of (FOCP) must be either sexually inactive (abstinent) or, if sexually active, must agree to use/practice one of the following acceptable methods of beginning during screening period prior to baseline (randomization, injection), for the duration of the study, and 2 months after study completion:

    1. simultaneous use of male condom and intra-uterine contraceptive device placed during screening period prior to baseline (randomization, injection)
    2. barrier method: condom with spermicidal foam/gel/film/cream/suppository or occlusive cap (diaphragm or cervical/vault caps) with spermicidal foam/gel/film/cream/suppository;
    3. established use of oral, injected or implanted hormonal methods of contraception;
    4. surgically sterile male partner (e.g., vasectomized partner is sole partner). With approval by the Investigator, subjects' parents or legal guardians may select abstinence as a form of birth control if deemed more appropriate. For the purposes of this study, all females are considered to be of childbearing potential unless they are confirmed by the Investigator to be premenarchal, biologically sterile, or surgically sterile (e.g., hysterectomy with bilateral oophorectomy, tubal ligation).
  9. Subject and the subject's parent/LAR are willing and able to comply with scheduled visits, treatment plan, laboratory tests, home monitoring, and other study procedures.

Exclusion criteria

Exclusion Criteria:

  1. FOCP subjects who are pregnant, lactating/breastfeeding and/or sexually active and not agreeing to use one of the acceptable methods throughout the study.
  2. History of drug or alcohol abuse within 6 months before Screening.
  3. Treatment with an drug, device, or biological agent within 30 days before Screening or while participating in this study.
  4. Major surgery (requiring general anesthesia) within 3 months before screening, or any anticipated or scheduled surgery during the study period (with or without general anesthesia).
  5. Aspiration pneumonia within 6 months before Screening.
  6. History of moderate dysphagia or severe dysphagia (defined as an inability to swallow liquids, solids or both without choking or medical intervention) within 6 months before screening. Subjects who require gastrostomy tube feeding are not excluded provided tube placement was at least 30 days prior to Baseline (Day 1; injection).
  7. Requires general anesthesia for study drug administration.
  8. Prior botulinum toxin type A (BoNT/A) or BoNT/B treatment for sialorrhea or cervical dystonia within 20 weeks before screening. Prior BoNT/A or BoNT/B treatment in other anatomical locations is not exclusionary, but must have occurred at least 12 weeks prior to screening. Prior toxin exposure must have been well tolerated and without any significant long-term side effects in cases of repeated prior exposure.
  9. Subjects must not receive nor have any plans to receive any other form of botulinum toxin treatment, other than the study drug (MYOBLOC), from the time that the is obtained until participation in the study is complete.
  10. History of lack of response to MYOBLOC.
  11. Any previous known or suspected to botulinum toxins type A (BoNT/A) or B (BoNT/B) or to any of the MYOBLOC solution components.
  12. Oxygen saturation \< 95% on room air at Screening and Baseline (prior to randomization).
  13. Subjects taking medications with anticholinergic/antihistamine properties who have not been on a stable dose and regimen for at least 2 weeks before Day 1. The same dose and dosing regimen must be maintained through the Week 4 study visit.
  14. Diagnosed with Obstructive Sleep Apnea which requires nightly Continuous Positive Airway Pressure (CPAP) or Bi-level Positive Airway Pressure (BiPAP) therapy, such that subject has been receiving nightly therapy for at least 30 days.
  15. Current or recent treatment (exposure within 5 half-lives of screening) or treatment at any time during the study with aminoglycoside antibiotics, curare-like agents, other agents that interfere with neuromuscular function, or dopamine receptor blocking agents (e.g., clozapine).
  16. Current treatment or treatment at any time during the study with Coumadin® (warfarin) or similar anti-coagulant medications. Anti- medications are not specifically exclusionary.
  17. Prior surgery or irradiation in the head and neck to control sialorrhea (including salivary gland surgery or salivary gland irradiation) within 1 year before screening or planned during the study.
  18. Extremely poor dental and/or oral condition, including infection at injection site(s) that might preclude safe study participation according to the judgment of the Investigator.
  19. Has one or more screening clinical laboratory test values outside the reference range that, in the opinion of the Investigator, are clinical significant, or any of the following:

    1. Serum creatinine >1.5 times the (ULN);
    2. Serum total >1.5 times ULN;
    3. Serum or aspartate aminotransferase >2 times ULN.
  20. Has any of the following cardiac findings at Screening:

    1. Abnormal that is, in the Investigator's opinion/evaluation, ;
    2. PR interval > 150 msec (2-5 years old); > 170 msec (6-11 years old); or > 180 msec (12-17 years old)
    3. QRS interval > 80 msec (2-5 years old); or > 90 msec (6-17 years old)
    4. interval >450 msec (for males), or >470 msec (for females) (QT corrected using Fridericia's method);
    5. Second-or third-degree atrioventricular block;
    6. Any rhythm, other than sinus rhythm, that is interpreted or assessed by the Investigator to be clinically significant.
  21. Has received COVID-19 vaccine (single or 2nd dose) in the last 30 days prior to Screening.
  22. Chronic or current use of inhaled , short acting beta-agonists or any other medication to manage asthma or other lung conditions such as emphysema.
  23. Any other medical illness, condition, or clinical finding, including clinically significant abnormal laboratory values that in the opinion of the Investigator and/or the Sponsor, would put the subject at undue risk.
Terms in these criteria, in plain language(13)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
0 participants (actual)

Study arms

  • Experimental
    MYOBLOC Low Dose

    MYOBLOC Low Dose will be administered as a single treatment via intraglandular injection (60 Units/kg)

    Drug: MYOBLOC Low Dose

  • Experimental
    MYOBLOC High Dose

    MYOBLOC High Dose will be administered as a single treatment via intraglandular injection (100 units/kg)

    Drug: MYOBLOC High Dose

  • Placebo comparator
    Placebo

    Volume-matched placebo will be administered as a single treatment via intraglandular injection

    Drug: Placebo

Interventions

  • Subjects assigned to the MYOBLOC Low Dose treatment group will be administered MYOBLOC (60 units/kg; maximum 1800 units) as a single treatment via intraglandular injection (5.0 units/kit per submandibular gland \[maximum 150 units\] and 25.0 units/kg per parotid gland \[maximum 750 units\])

    Also known as: rimabotulinumtoxinB

  • Subjects assigned to the MYOBLOC High Dose treatment group will be administered MYOBLOC (100 units/kg; maximum 3000 units) as a single treatment via intraglandular injection (25.0 units/kit per submandibular gland \[maximum 300 units\] and 40.0 units/kg per parotid gland \[maximum 1200 units\])

    Also known as: rimabotulinumtoxinB

  • DrugPlacebo

    Subjects assigned to the Placebo treatment group will be administered volume-matched placebo (1:1)

    Also known as: PBO

06

What researchers measure

Primary outcomes

  1. The change from baseline in the Unstimulated Saliva Flow Rate (USFR) at Week 4 post-injection.

    At each study visit, the subject's saliva is collected for at least 3 minutes and weighed (grams). The Unstimulated Saliva Flow Rate (USFR; grams/minute) for each visit is calculated for by dividing the 'total grams of saliva collected during the collection period' by the 'total minutes of the collection period. The USFR at Week 4 post-injection visit subtracted from the USFR at Baseline visit (prior to injection) yields the change from baseline USFR. A change from baseline USFR \<0 grams/minutes represents a better outcome.

    Time frame: Baseline and Week 4

  2. The Clinical Global Impression of Change (CGI-C) score at Week 4 post-injection.

    The Clinical Global Impression of Change (CGI-C) scale is a single item clinician assessment of how much the subject's condition (sialorrhea) has improved, worsened or has not changed relative to subject's state at baseline prior to treatment (injection). The CGI-C is rated on a 7-point scale from 1 to 7, where 1 = "Very much improved", 2 = "Much improved", 3 = "Minimally improved", 4 = "No change", 5 = "Minimally worse", 6 = "Much worse", and 7 = "Very much worse". A CGI-C score \<4 represents a better outcome.

    Time frame: Week 4

Secondary outcomes

  1. The Parent/Guardian Global Impression of Change (PGI-C) score at Week 4 post-injection.

    The Parent/Guardian Global Impression of Change (PGI-C) scale is a single item parent/guardian assessment of how much the subject's condition (sialorrhea) has improved, worsened or has not changed relative to subject's state at baseline prior to treatment (injection). The PGI-C is rated on a 7-point scale from 1 to 7, where 1 = "Very much improved", 2 = "Much improved", 3 = "Minimally improved", 4 = "No change", 5 = "Minimally worse", 6 = "Much worse", and 7 = "Very much worse". A PGI-C score \<4 represents a better outcome

    Time frame: Week 4

  2. The change from baseline in the Unstimulated Saliva Flow Rate (USFR) at Weeks 2, 8 and 13 post-injection.

    At each study visit, the subject's saliva is collected for at least 3 minutes and weighed (grams). The Unstimulated Saliva Flow Rate (USFR; grams/minute) for each visit is calculated for by dividing the 'total grams of saliva collected during the collection period' by the 'total minutes of the collection period'. The USFR at the post-injection visit subtracted from the USFR at Baseline visit (prior to injection) yields the change from baseline USFR. A change from baseline USFR \<0 grams/minutes represents a better outcome.

    Time frame: Baseline and Weeks 2, 8 and 13

  3. The Clinical Global Impression of Change (CGI-C) score at Weeks 2, 8, and 13 post-injection.

    The Clinical Global Impression of Change (CGI-C) scale is a single item clinician assessment of how much the subject's the subject's condition (sialorrhea) has improved, worsened or has not changed relative to subject's state at baseline prior to treatment (injection). The CGI-C is rated on a 7-point scale from 1 to 7, where 1 = "Very much improved", 2 = "Much improved", 3 = "Minimally improved", 4 = "No change", 5 = "Minimally worse", 6 = "Much worse", and 7 = "Very much worse". A CGI-C score \<4 represents a better outcome.

    Time frame: Weeks 2, 8 and 13

  4. The Parent/Guardian Global Impression of Change (PGI-C) score at Week 2, 8, and 13 post-injection.

    The Parent/Guardian Global Impression of Change (PGI-C) scale is a single item parent/guardian assessment of how much the subject's condition (sialorrhea) has improved, worsened or has not changed relative to subject's state at baseline prior to treatment (injection). The PGI-C is rated on a 7-point scale from 1 to 7, where 1 = "Very much improved", 2 = "Much improved", 3 = "Minimally improved", 4 = "No change", 5 = "Minimally worse", 6 = "Much worse", and 7 = "Very much worse". A PGI-C score \<4 represents a better outcome.

    Time frame: Weeks 2, 8, and 13

  5. The change from baseline in the Modified Teacher's Drooling Scale (mTDS) score at Week4 post injection.

    The Modified Teacher's Drooling Scale (mTDS) is a single-item scale used to assess subject's drooling severity and frequency. It is rated by the parent/guardian on a 9-point scale (1-9); where 1 = "Dry: never drools"; 2 = "Mild: only the lips are wet, occasionally"; 3 = "Mild: only the lips are wet, frequently"; 4 = "Moderate: wet on the lips and chin, occasionally"; 5 = "Moderate: wet on the lips and chin, frequently"; 6 = "Severe: drools to the extent that clothing becomes damp, occasionally"; 7 = "Severe: drools to the extent that clothing becomes damp, frequently"; 8 = "Profuse: clothing, hands, tray, and objects become wet, occasionally"; 9 = "Profuse: clothing, hands, tray, and objects become wet, frequently". The mTDS score at Week 4 Post injection subtracted from the mTDS score at Baseline yields the change from baseline mTDS score. A change from baseline mTDS score \<0 represents a better outcome.

    Time frame: Baseline and Week 4

  6. The change from baseline in the Drooling Impact Scale (DIS) score at Week 4 post-injection.

    The Drooling Impact Scale (DIS) is a 10-item questionnaire used to assess the frequency, severity, and impact of subject's drooling. Each item is rated by the parent/guardian on a 10-point end-anchor semantic differential scale (1 to 10; where 1 = "best outcome" to 10 = "worst outcome"). The sum of all 10 items yields a total score (ranging from 10-100). The DIS total score at Week 4 Post injection subtracted from the DIS total score at Baseline yields the change from baseline DIS total score. A change from baseline DIS score \<0 represents a better outcome.

    Time frame: Baseline and Week 4

07

Study locations

No study locations are listed for this record.

08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 19, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05097079
Responsible party
Sponsor
First posted
Oct 27, 2021
Start date
Nov 2021 (estimated)
Primary completion
May 2023 (estimated)
Completion
May 2023 (estimated)
Last update
Sep 19, 2024

Study contacts

Jonathan Rubin, MD
study director · Supernus Pharmaceuticals

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is withdrawn, as verified in Sep 2024. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: rimabotulinumtoxinB

Start the discussion