PRODUODOPA Clinical Studies

PRODUODOPA Clinical Studies

The efficacy and safety of 24-hour continuous levodopa-based therapy with PRODUODOPA were demonstrated in 2 trials.1-3

12-Week

Pivotal Phase 3, randomized, double-blind, double-dummy, active-controlled study evaluating the efficacy and safety of 24‑hour daily continuous subcutaneous infusion of PRODUODOPA compared with oral IR levodopa/carbidopa1,3

52-Week

Phase 3, single-arm, open-label study evaluating the safety and efficacy of 24-hour daily exposure with a continuous subcutaneous infusion of PRODUODOPA1,2

IR=immediate-release.

Continue to Safety page

Please refer to the PRODUODOPA SmPC for complete Prescribing and Safety Infomation.

REFERENCES:

  1. [DRAFT] Produodopa® (foslevodopa/foscarbidopa solution for infusion) Summary of Product Characteristics (SmPC). <insert current SmPC date>.
  2. Aldred J, Freire-Alvarez E, Amelin AV, et al. Continuous Subcutaneous Foslevodopa/Foscarbidopa in Parkinson's Disease: Safety and Efficacy Results From a 12-Month, Single-Arm, Open-Label, Phase 3 Study. Neurol Ther. 2023. doi: 10.1007/s40120-023-00533-1. Epub ahead of print.
  3. Soileau MJ, Aldred J, Budur K, et al. Safety and efficacy of continuous subcutaneous foslevodopa-foscarbidopa in patients with advanced Parkinson's disease: a randomised, double-blind, active-controlled, phase 3 trial. Lancet Neurol. 2022;21(12):1099-1109. doi:10.1016/S1474-4422(22)00400-8. Erratum in: Lancet Neurol. 2023 Mar;22(3):e5.
  4. Rosebraugh M, Liu W, Neenan M, Facheris MF. Foslevodopa/foscarbidopa is well tolerated and maintains stable levodopa and carbidopa exposure following subcutaneous infusion. J Parkinsons Dis. 2021;11(4):1695-1702. doi:10.3233/JPD-212813
  5. Rosebraugh M, Stodtmann S, Liu W, Facheris MF. Foslevodopa/foscarbidopa subcutaneous infusion maintains equivalent levodopa exposure to levodopa-carbidopa intestinal gel delivered to the jejunum. Parkinsonism Relat Disord. 2022;97:68-72.

▼ This medicinal product is subject to additional monitoring. This will allow quick identification of new safety information. Healthcare professionals are asked to report any suspected adverse reactions.

PRODUODOPA® Indication and Summary of Important Treatment Considerations1

Indication:

Treatment of advanced levodopa-responsive Parkinson’s disease with severe motor fluctuations and hyperkinesia or dyskinesia when available combinations of Parkinson medicinal products have not given satisfactory results.

Contraindications:

PRODUODOPA is contraindicated in patients with hypersensitivity to the active substances or to any of the excipients, narrow-angle glaucoma, severe heart failure, acute stroke, severe cardiac arrhythmia, co-medication with selective type A inhibitors and nonselective MAO inhibitors, conditions contraindicated for adrenergics (e.g. pheochromocytoma, hyperthyroidism, and Cushing’s syndrome), and suspicious skin lesions or history of melanoma.

Some special warnings and precautions for PRODUODOPA:
Not recommended for the treatment of drug-induced extrapyramidal reactions.
Caution use in patients with: severe cardiovascular or pulmonary disease, bronchial asthma, renal, hepatic or endocrine disease, or history of peptic ulcer disease or of convulsions, history of myocardial infarction with residual atrial nodal or ventricular arrhythmias, cardiac function should be monitored during the initial dosage adjustments. Monitor all patients for the development of mental changes, depression with suicidal tendencies, and other serious mental changes. Caution with past or current psychosis and antipsychotics. Higher frequency of hallucinations may occur with dopamine agonists and/or other dopaminergic treatments including PRODUODOPA. Monitor patients regularly for the development of impulse control disorders, for example Dopamine Dysregulation Syndrome (DDS). Caution in chronic wide-angle glaucoma; monitor for intra-ocular pressure changes. Levodopa may induce hypotension, somonolence and sudden sleep: caution should be exercised when driving and operating machines. Risk of symptoms resembling Neuroleptic Malignant Syndrome following abrupt dose reduction or discontinuation.
Patients with Parkinson’s disease have a higher risk of developing melanoma. Monitor patients for melanomas on a regular basis when using PRODUODOPA.
Periodic evaluation of hepatic, haematopoietic, cardiovascular and renal function is recommended during extended therapy with PRODUODOPA.
PRODUODOPA contains hydrazine (foscarbidopa degradation product), that can be genotoxic and probably carcinogenic. The approximately median exposure of hydrazine is 0.2 mg/day, with a maximum of 0.5 mg/day. The clinical significance of this hydrazine exposure is not known.
Polyneuropathy has been reported; evaluate for history/signs of and known risk factors before starting therapy.
PRODUODOPA is high in sodium; considered especially in patients on a low salt diet.
Caution is needed in concomitant administration of PRODUODOPA with the following medicinal products: Antihypertensive, antidepressants, COMT inhibitors, dopamine agonists, MAO inhibitors, amantadine. Foscarbidopa is a potential inducer of CYP1A2 in vitro. Care should be taken when prescribing PRODUODOPA in combination with sensitive CYP1A2 substrates (e.g. caffeine).
PRODUODOPA is not recommended during pregnancy. Breast-feeding should be discontinued during treatment with PRODUODOPA.
The most frequent adverse reactions (≥10%) were infusion site events (infusion site erythema, infusion site nodule, infusion site cellulitis, infusion site oedema, infusion site pain, infusion site infection, and infusion site reaction), hallucination, fall, anxiety, and dizziness.
Infusion site events were reported with Produodopa in the clinical studies. Following aseptic techniques and frequent rotation of the infusion site are recommended to reduce the risk. Few patients who reported infusion site reactions also experienced infusion site infections. Therefore, careful monitoring of serious infusion site reactions and infusion site infections is recommended.

Please refer to the Produodopa SmPC for complete Prescribing and Safety Information.

<placeholder link for local PRODUODOPA SmPC>

ALL-PRODD-220020. Date of preparation: July 2023.

Note to affiliate: This pop-up includes endpoints that may not be included within the SmPC. Please refer to accompanying PRODUODOPA Campaign Guidance Document.

PRODUODOPA 12-Week Efficacy and Safety Study Endpoints3

PRODUODOPA 12-Week Efficacy and Safety Study Endpoints3

Primary 

 Change from baseline to Week 12 in “On” time without troublesome dyskinesia (hours/day)a,b
 

Key Secondary

Change from baseline to Week 12 in:

 “Off” time (hours/day)b
 Motor aspects of experiences of daily living (MDS-UPDRS)c
 Morning akinesia (%)d

 

Other Secondary

Change from baseline to Week 12 in:

 “On” time without dyskinesia (hours/day)
 Sleep symptoms (PDSS-2)
 Quality of life (PDQ-39)
Quality of life (EQ-5D-5L)e
 PD symptoms (median/IQR PKG bradykinesia and dyskinesia score)

Data reported as least squares mean change from baseline (SE), unless otherwise stated. Treatment difference is the difference between least squares mean changes (SE). Morning akinesia reported as least squares mean of odds ratio (SE) at Week 12. Secondary efficacy endpoints were tested in a hierarchical order.

a“On” time without troublesome dyskinesia is the sum of “On” time without dyskinesia and “On” time with non-troublesome dyskinesia.

bBased on PD diary (normalized to a 16-hour waking day and averaged over 3 consecutive days).

cMDS-UPDRS Part II score.

dMorning akinesia is defined as reporting “Off” status as the first morning symptom on waking.

eEQ-5D-5L summary index is based on the weighted scoring algorithm for the United States.

EQ-5D-5L=EuroQol 5-Dimension Questionnaire; IQR=InterQuartile Range; MDS-UPDRS=Movement Disorder Society—Unified Parkinson’s Disease Rating Scale; PDSS-2=Parkinson’s Disease Sleep Scale-2; PDQ-39=39-item Parkinson’s Disease Questionnaire; PKG=Parkinson’s KinetiGraph or Personal KinetiGraph (Global Kinetics, MN, USA); SE=standard error.

Note to affiliates: This pop-up includes endpoints that may not be included within the SmPC. Please refer to accompanying PRODUODOPA Campaign Guidance Document. All secondary endpoints included here for completeness and transparency, however, a few of them did not meet statistical significance based on hierarchy. These endpoints appear within the Study 736 publication and are pending assessment within the Type II variation SmPC assessment by MPA. Please assess inclusion based on your local rules and regulations. Only data from SmPC related to "On" and "Off" time can be discussed.

PRODUODOPA 52-Week Safety Study Endpoints2

PRODUODOPA 52-Week Safety Study Endpoints2

Primary 

Adverse events (%)a
Percentage of patients with adverse events of special interesta
Percentage of patients with numeric grade 5 and with letter grade D on the Infusion Site Evaluation Scaleb
 

Change from baseline to end of study in:

Clinical laboratory test data
Vital sign measurements
Electrocardiograms (ECGs)
 

Secondary

Change from baseline to end of study in:

Average normalized daily “Off” time and “On” timec
Motor aspects of experiences of daily livingd
Sleep symptomse
Quality of lifef
Health-related quality of lifeg
Morning akinesia (%)h

aFrom initiation of continuous subcutaneous infusion (CSCI) through 30 days after last infusion device was removed (up to 56 weeks).

bThe Infusion Site Evaluation Scale, a two-part numeric (0-7) and letter (A-G) grade scale, where 7 and G indicated the worst outcomes, was used to assess skin tolerability.4

cPD diary.

dMovement Disorder Society-Unified Parkinson’s Disease Rating Scale (MDS-UPDRS) Parts I-IV (with Part III measured in the patients' best "On" state) score.

eParkinson’s Disease Sleep Scale-2 (PDSS-2) total score.

fPD Questionnaire-39 items (PDQ-39).

gEuroQol 5-dimensions questionnaire (EQ-5D-5L).

hPercentage of subjects with early morning “Off” status based on the first morning symptom upon awakening derived from PD diary.

PD=Parkinson’s disease.

Note to affiliate: All secondary endpoints are included here for completeness, however, endpoints aside from "On" and "Off" time are pending Regulatory Agency feedback for inclusion within the draft SmPC filed for Type II variation.

Subcutaneous PRODUODOPA and enteral DUODOPA® (levodopa/carbidopa intestinal gel) were shown to have comparable levodopa Cmax, AUC, and degree of fluctuation, supporting a comparable efficacy profile.1

Subcutaneous PRODUODOPA and enteral DUODOPA® (levodopa/carbidopa intestinal gel) were shown to have comparable levodopa Cmax, AUC, and degree of fluctuation, supporting a comparable efficacy profile.1

Levodopa exposure following 24-hour PRODUODOPA infusion and 16-hour DUODOPA infusion followed by nighttime oral LD/CD doses5

 

Formulation

PRODUODOPA

DUODOPA + Nighttime Oral LD/CD

Note to affiliate: the graph presented here is based on the published Rosebraugh reference, however the colors have been adjusted to match the project. Please update per your local rules and regulations.

PRODUODOPA and DUODOPA Provide Continuous Stable Levodopa Plasma Levels1*

*In the PK comparability study, PRODUODOPA is administered as a continuous subcutaneous infusion, 24 hours per day. In healthy volunteers, steady state was achieved within 2 hours when PRODUODOPA was delivered as a loading dose followed by continuous infusion. Steady state was maintained during the infusion period.

AUC=area under the curve; Cmax=peak concentration; LD/CD=levodopa/carbidopa; PK=pharmacokinetics.

DUODOPA® Provides Less “Off” Time and More “On” Time Without Troublesome Dyskinesia2,4

DUODOPA® Provides Less “Off” Time and More “On” Time Without Troublesome Dyskinesia2,4

DUODOPA demonstrated significant improvements in “Off” time (baseline to endpoint) and “On” time without troublesome dyskinesia (baseline to endpoint) compared to oral levodopa/carbidopa (LS mean difference). Analysis of other secondary efficacy endpoints are not presented here. Please refer to the PRODUODOPA SmPC for further information about these endpoints.

Duration: 12 weeks. Study type: Randomized, double-blind, double-dummy, double-titration trial. Patient population: 71 adult patients with advanced PD and motor complications. Aim: To assess the efficacy and safety of levodopa-carbidopa intestinal gel delivered continuously through an intrajejunal percutaneous tube. Primary endpoint: Change from baseline to final visit in motor “Off” time.4

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LS=least squares; SD=standard deviation; SE=standard error.

aActive control, oral levodopa/carbidopa 100/25 mg tablets.