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NCT Number: NCT06937931

A Study of IPN10200 for the Treatment of Cervical Dystonia in Adults

The purpose of this study is to evaluate the efficacy and safety of the study drug, Corabotase (also known as IPN10200), and to assess how well it works when compared with placebo in treating Cervical Dystonia (CD) in adults.

CD can cause a series of abnormalities and symptoms in the head and neck that can lead to neck pain and stiffness, and headaches. CD is believed to involve deep parts within the brain that control movement, but genetic factors, environmental factors, and abnormalities in the brain may also play a role.

The usual treatment for CD includes injecting BoNT into the affected muscles, but the treatment only lasts about 3 months. Corabotase is designed to last for a longer period.

The study will consist of two periods:

1. A Screening Period of up to 4 weeks (28 days) to assess whether a participant can take part in the study and requires at least one visit. 2. A Treatment Period of 36 weeks.

On Day 1 of the treatment period, participants will receive either Corabotase Dose A or Dose B (additional participants may receive Corabotase Dose C) of the study drug, or placebo distributed into different muscles in the head, neck and shoulders. Participants may continue some other medications, but details need to be recorded.

There will be 10 visits to the clinic in person and one remote visits (phone call) (12 visits to the clinic for participants who receive Dose C). Participants will undergo blood samplings, urine collections, physical/neurological examinations, and clinical evaluations. Participants will also need to complete questionnaires throughout the study.

The total study duration for a participant will be up to 40 weeks (approximately 9 months).

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Key information

Conditions

Cervical Dystonia Dyskinesias Dystonia Neurologic Manifestations Pathological Conditions, Signs and Symptoms Signs and Symptoms Torticollis

Age range

18 year–80 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

Fakultni nemocnice u sv. Anny v Brne - I. Neurologicka klinika, Brno, Czechia

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • A clinical diagnosis of isolated Cervical Dystonia (CD) (idiopathic) characterized by dystonic symptoms localised to the head, neck, and shoulder areas with at least moderate severity at Screening and Baseline (Day 1) defined as:
  • (a) Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS)-Total score ≥20
  • (b) TWSTRS-Severity subscale score ≥15
  • (c) TWSTRS-Disability subscale score ≥3
  • (d) TWSTRS-Pain subscale score ≥ 1
  • Treatment naïve or non-naïve to BoNT therapy for CD

Exclusion criteria

  • Participants presenting with a swallowing disorder of any origin which might be exacerbated by BoNT treatment, such as:
  • (a) Grade 3 or 4 on the Dysphagia Severity Scale (severe dysphagia) with swallowing difficulties and requiring a change in diet.
  • Predominant anterocollis.
  • Predominant retrocollis.
  • Traumatic torticollis or tardive torticollis.
  • Marked limitation on passive range of motion that suggests cervical contractures or structural abnormality.

Treatment and study plan

Corabotase

Biological

Study intervention will be administered in a single treatment cycle after randomisation (Day 1). The administration cycle consists of intramuscular injection.

Other names: IPN10200

Placebo

Other

Excipients without active substance will be administered in a single treatment cycle after randomisation (Day 1). The administration cycle consists of intramuscular injection.

Primary outcomes

  1. Change from Baseline in the Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS) total score

    Time frame: At Week 4

    The Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS) is a rating scale for Cervical Dystonia (CD) consisting of three subscales: severity, disability and pain scales. The total score is the sum of each of the subscales, with a range of 0 to 85, where higher scores are indicative of greater impairment.

Secondary outcomes

  1. Change from Baseline in the TWSTRS total score at all other scheduled timepoints post injection until Week 36

    Time frame: At all timepoints post injection until Week 36.

    The Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS) is a rating scale for Cervical Dystonia (CD) consisting of three subscales: severity, disability and pain scales. The total score is the sum of each of the subscales, with a range of 0 to 85, where higher scores are indicative of greater impairment.

  2. Change from Baseline in the TWSTRS-Pain Subscale

    Time frame: At all timepoints post injection until Week 36.

    The TWSTRS pain subscale consists of three patient-rated items that assess the participants usual, worst and best pain from the preceding week, and the subscore has a maximum of 20.

  3. Change from baseline in the daily Numerical Rating Scale (NRS) score

    Time frame: Averaged over every 7-day period until the Week 4 visit

    The Numeric Rating Scale (NRS) is a unidimensional measure of pain intensity in adults. The NRS is a segmented numeric version of the visual analogue scale in which a respondent selects a whole number (0 to 10 integers) that best reflects the intensity of his/her pain. The 11-point numeric scale ranges from '0' representing one pain extreme (e.g. "no pain") to '10' representing the other pain extreme (e.g. "pain as bad as you can imagine" or "worst pain imaginable").

  4. Time to onset of pain reduction

    Time frame: From study injection to first timepoint at which at least 2-point reduction is observed in NRS score

    Defined as the duration from the administration of the study injection to the first recorded instance of a minimum 2-point decrease in the Numeric Rating Scale (NRS) score.

  5. Time to return of symptoms in responders (time from treatment to loss of 80% of peak treatment effect)

    Time frame: From randomization until Week 36

    As assessed by TWSTRS total score. TWSTRS scale consisting of three subscales: severity, disability and pain scales. The total score is the sum of each of the subscales, with a range of 0 to 85, where higher scores are indicative of greater impairment.

  6. Change from Baseline in the TWSTRS-Disability Subscale

    Time frame: At all timepoints post injection until Week 36.

    The TWSTRS disability subscale assesses the effect that Cervical Dystonia (CD) has on the participant's daily activities and the subscore has a maximum of 30 and consists of six items.

  7. Change from Baseline in the TWSTRS-Severity Subscale

    Time frame: At all scheduled timepoints post injection until Week 36

    The TWSTRS severity subscale rates the maximal excursion of the torticollis (degree of tilt or rotation), elevation, range of motion, etc. This severity subscore has a maximum subtotal of 35 and consists of 11 items.

  8. Change from baseline in Clinical Global Impression of Severity score

    Time frame: At all timepoints post injection until Week 36.

    The Clinical Global Impression of Severity (CGI-S) is a clinician rated scale that measures the severity of an illness in a participant. It is rated on a 7-point scale ranging from 1 (normal) to 7 (severely ill) in answer to a question on the mental state of the participant at the time of the assessment.

  9. Clinical Global Impression of Change score

    Time frame: At all timepoints post injection until Week 36.

    The Clinical Global Impression of Change (CGI-C) is a clinician rated scale that measures the clinical change in a participant. It is rated on a 7 point scale ranging from 1 (very much improved) to 7 (very much worse) in answer to a question on the mental state of the participant at the time of the assessment.

  10. Change from baseline in Patients' Global Impression of Severity score

    Time frame: At all timepoints post injection until Week 36

    The Patient Global Impression of Severity (PGI-S) is a global index that may be used to rate the severity of a specific condition (a single-state scale). The PGI-S is a single question asking the participant to rate how their condition is now on a scale of 1 (Normal) to 4 (Severe).

  11. Patients' Global Impression of Change score

    Time frame: At all timepoints post injection until Week 36

    The Patient Global Impression of Change (PGI-C) is a single-item questionnaire used to measure the participant's impression of overall change in CD, in terms of activity, limitations, symptoms, emotions, and overall quality of life, since the first dose of study intervention. The measure uses a 7-point rating scale with responses ranging from "very much improved" (3) to "very much worse" (-3). Improvement is considered as very much improved, much improved, or minimally improved.

  12. Change from Baseline in the CDIP-58 total score

    Time frame: At all timepoints post injection until Week 36

    The Cervical Dystonia Impact Profile (CDIP-58) is a patient-based rating scale measuring the health impact of CD and contains eight subscales measuring head and neck symptoms (6 items), pain and discomfort (5 items), sleep (4 items), upper limb activities (9 items), walking (9 items), annoyance (8 items), mood (7 items), and psychosocial functioning (10 items). The total score and each subscale score have a common range of 0 (no impact) to 100 (most impact).

  13. Percentage of participants experiencing any Adverse Event (AEs) including treatment emergent adverse events (TEAEs), serious adverse events (SAEs), adverse event of special interest (AESI) and AE leading to treatment discontinuation

    Time frame: From baseline to Week 36.

    An Adverse event (AE) is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. TEAE is an AE for which the start date is on or after the date that the intervention began.

  14. Percentage of participants with clinically significant changes from baseline in Laboratory Parameters

    Time frame: At all timepoints post injection until Week 36

    Clinically significant change in laboratory parameters will be reported. The clinical significance will graded by the investigator.

  15. Percentage of Participants With Clinically Significant Changes from baseline in Vital Signs

    Time frame: At all timepoints post injection until Week 36

    Clinically significant changes in vital signs will be reported. The clinical significance will be graded by the investigator.

  16. Percentage of participants with clinically significant change from baseline in focused neurological/physical examinations.

    Time frame: At all timepoints post injection until Week 36

  17. Percentage of participants with clinically significant change from baseline in 12-lead Electrocardiogram (ECG) readings.

    Time frame: At all timepoints post injection until Week 36

  18. Treatment-emergence of suicidal ideation/suicidal behaviour

    Time frame: From baseline to Week 36.

    The Columbia Suicide Severity Rating Scale (C-SSRS) will be used in this study for the evaluation of suicidal ideation and behaviour.

  19. Percentage of participants with Binding antibodies to IPN10200

    Time frame: At all timepoints post injection until Week 36

  20. Percentage of participants with neutralising antibodies to IPN10200

    Time frame: At all timepoints post injection until Week 36

Study contacts

Contact information is provided by the study sponsor or research team.

Ipsen Clinical Study Enquiries

CONTACT

[email protected]

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Sponsors and collaborators

Lead sponsor

Ipsen

Industry

Registry information

Official study title

A Phase II, Multicentre, Randomised, Double-blind, Parallel-Group, Placebo Controlled Study to Evaluate the Efficacy and Safety of IPN10200 as a Treatment for Cervical Dystonia in Adult Participants

Acronym: CATALPA

Important dates

Study start
2025
Primary completion
2027
Study completion
2027
First posted
Apr 22, 2025
Registry last updated
Jul 28, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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