An Open-Label Immunogenicity and Pharmacokinetics Study of Daclizumab High Yield Process Prefilled Syringe in Relapsing Remitting Multiple Sclerosis (OBSERVE)
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ClinicalTrials.gov Identifier: NCT01462318 |
Recruitment Status :
Completed
First Posted : October 31, 2011
Results First Posted : March 14, 2017
Last Update Posted : March 14, 2017
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Condition or disease | Intervention/treatment | Phase |
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Relapsing-Remitting Multiple Sclerosis | Drug: Midazolam Other: Caffeine Drug: S-warfarin Other: Vitamin K Drug: Omeprazole Drug: Dextromethorphan Biological: BIIB019 (Daclizumab) | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 133 participants |
Allocation: | N/A |
Intervention Model: | Single Group Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Other |
Official Title: | A Multicenter, Single-Arm, Open-Label Study to Evaluate the Immunogenicity and Pharmacokinetics of BIIB019, Daclizumab High Yield Process (DAC HYP), Prefilled Syringe Administered by Subcutaneous Injection in Subjects With Relapsing-Remitting Multiple Sclerosis |
Study Start Date : | November 2011 |
Actual Primary Completion Date : | January 2016 |
Actual Study Completion Date : | January 2016 |

Arm | Intervention/treatment |
---|---|
Experimental: DAC HYP
DAC HYP 150 mg by a subcutaneous (SC) injection using the pre-filled syringe (PFS) every 4 weeks for 24 weeks followed by a 20-week washout period. After completion of the washout period, participants may resume monthly DAC HYP 150 mg using the PFS for up to 3 additional years. Participants in the TP-DI sub-study will receive probe-drug cocktail administration at Weeks 43 and 53. The probe-drug cocktail consists of oral midazolam 5 mg, caffeine 200 mg, S-warfarin 10 mg, vitamin K 10 mg, omeprazole 40 mg, and dextromethorphan 30 mg. The oral vitamin K is used to counteract warfarin's anticoagula nt effect prophylactically. |
Drug: Midazolam
5 mg Other: Caffeine 200 mg Drug: S-warfarin 10 mg Other: Vitamin K 10 mg Drug: Omeprazole 40 mg Drug: Dextromethorphan 30 mg Biological: BIIB019 (Daclizumab) 150 mg in 1 ml PFS
Other Name: Daclizumab High Yield Process; DAC HYP |
- Number of Participants With Anti-DAC HYP Binding Antibodies (ADAbs): Electrochemiluminescent (ECL) Anti-Drug Antibody (ADA) Assay [ Time Frame: Up to 44 weeks ]Participants with post-baseline (PB) ADAbs through Week 44, in the treatment period (extends up to 42 days after the last dose during the main study), and in the post-treatment period (43 days after the last dose until the end of the post-treatment period dose).
- Number of Participants With Anti-DAC HYP Neutralizing Antibodies (NAbs): ECL ADA Assay [ Time Frame: Up to 44 weeks ]Participants with PB NAbs through Week 44, in the treatment period (extends up to 42 days after the last dose during the main study), and in the post-treatment period (43 days after the last dose until the end of the post-treatment period dose).
- TP-DI Sub-study: Area-Under-the-Curve From Zero to Infinity (AUCinf) of Each Probe Drug [ Time Frame: Week 43 (7 days prior to DAC HYP administration) and Week 53 (7 days after DAC HYP administration), pre-cocktail dose and at 0.5 and 1, 2, 3, 4, 6, 8, 10 , 24, 48, 72 and 96 hours post-probe drug cocktail administration ]AUCinf of each of the following cytochrome P450 (CYP) isoenzyme substrates: midazolam (CYP3A), S-warfarin + vitamin K (CYP2C9), and omeprazole (CYP2C19). The AUC from zero to 12 hours (AUC0-12) was calculated for caffeine (CYP1A2).
- TP-DI Sub-study: Dextromethorphan to Dextrorphan Urine Concentration Ratio [ Time Frame: Week 43 (7 days prior to DAC HYP administration) and Week 53 (7 days after DAC HYP administration), pre-cocktail dose and for 12 hours after probe-drug cocktail administration ]
- Intensive PK Sub-study: Cmax of DAC HYP [ Time Frame: Day 1 and Day 141 (Week 20) at pre-dose and 8, 24, 72, and 120 hours post-dose and 7, 10, 14 and 21 days post-dose ]
- Intensive PK Sub-study: Time to Reach Maximum Concentration (Tmax) of DAC HYP [ Time Frame: Day 1 and Day 141 (Week 20) at pre-dose and 8, 24, 72, and 120 hours post-dose and 7, 10, 14 and 21 days post-dose ]
- Intensive PK Sub-study: Area-Under-the-Curve From Start to End of the Dosing Interval (AUCtau) of DAC HYP [ Time Frame: Day 1 and Day 141 (Week 20) at pre-dose and 8, 24, 72, and 120 hours post-dose and 7, 10, 14, and 21 days post-dose ]
- Intensive PK Sub-study: Minimum Concentrations (Cmin) of DAC HYP [ Time Frame: Day 141 (Week 20) at pre-dose and 8, 24, 72 and 120 hours post-dose and 7, 10, 14 and 21 days post-dose ]
- Intensive PK Sub-study: Apparent Volume of Distribution (V/F) of DAC HYP [ Time Frame: Day 141 (Week 20) at pre-dose and 8, 24, 72 and 120 hours post-dose and 7, 10, 14 and 21 days post-dose ]
- Intensive PK Sub-study: Elimination Half-life (t½) of DAC HYP [ Time Frame: Day 141 (Week 20) at pre-dose and 8, 24, 72 and 120 hours post-dose and 7, 10, 14 and 21 days post-dose ]
- Intensive PK Sub-study: Apparent Clearance (CL/F) of DAC HYP [ Time Frame: Day 141 (Week 20) at pre-dose and 8, 24, 72 and 120 hours post-dose and 7, 10, 14 and 21 days post-dose ]
- TP-DI Sub-study: Cmax of Each Probe Drug [ Time Frame: Week 43 (7 days prior to DAC HYP administration) and Week 53 (7 days after DAC HYP administration), pre-cocktail dose and at 0.5 and 1, 2, 3, 4, 6, 8, 10 , 24, 48, 72 and 96 hours post-probe drug cocktail administration ]Cmax of each of the following CYP isoenzyme substrates: midazolam (CYP3A), caffeine (CYP1A2), warfarin + vitamin K (CYP2C9), and omeprazole (CYP2C19).
- TP-DI Sub-study: CL/F of Each Probe Drug [ Time Frame: Week 43 (7 days prior to DAC HYP administration) and Week 53 (7 days after DAC HYP administration), pre-cocktail dose and at 0.5 and 1, 2, 3, 4, 6, 8, 10 , 24, 48, 72 and 96 hours post-probe drug cocktail administration ]CL/F of each of the following CYP isoenzyme substrates: midazolam (CYP3A), warfarin + vitamin K (CYP2C9), and omeprazole (CYP2C19).
- TP-DI Sub-study: Omeprazole/Hydroxyomeprazole Concentration Ratio at 2 Hours Post-omeprazole Dosing [ Time Frame: Week 43 (7 days prior to DAC HYP administration) and Week 53 (7 days after DAC HYP administration) at 2 hours after probe drug cocktail administration ]

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Ages Eligible for Study: | 18 Years to 65 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Key Inclusion Criteria:
- Must have a confirmed diagnosis of RRMS according to McDonald criteria and previous cranial magnetic resonance imaging demonstrating lesion(s) consistent with MS
- Must have a baseline Expanded Disability Status Scale (EDSS) between 0.0 and 5.0, inclusive
- Must have had 1 or more clinical relapses within the previous 2 years
- Women of child bearing potential must be willing to practice effective contraception during the study and 4 months after the last dose
Key Exclusion Criteria:
- Other chronic disease of the immune system, malignancies, acute urologic, pulmonary, gastrointestinal disease
- Female subjects who are currently pregnant or breastfeeding
Key Inclusion criteria for 3-Year Treatment Extension:
To be eligible for participation in the 3-year treatment extension, participants must meet the following eligibility criteria at the time of reinitiation of DAC HYP:
- Must have been compliant with the 205MS302 (NCT01462318) protocol during the initial 24-week treatment period and the 20-week washout period in the opinion of the Investigator
- Must resume DAC HYP treatment ≤12 weeks after completion of the washout period (i.e., ≤12 weeks after their Week 44 visit).
- Participants who are currently receiving an approved IFN ß preparation must discontinue interferon (IFN) ß treatment at the time of reinitiation of DAC HYP dosing (no washout is required).
Key Inclusion criteria for the TP-DI Sub-study:
To be eligible for participation in the TP-DI Sub-Study, subjects must meet the following eligibility criteria at the Screening Visit at Week 40:
- Must have been compliant with the 205MS302 (NCT01462318) protocol during the initial 24-week treatment period and through Week 40 of the 20-week washout period in the opinion of the Investigator.
- Must agree to resume DAC HYP treatment ≤12 weeks after completion of the washout period (i.e., ≤12 weeks after their Week 44 visit).
- Must have normal liver function test results (total bilirubin ≤1.5 × upper limit of normal (ULN), alanine aminotransferase/aspartate aminotransferase ≤2 × ULN, and prothrombin time/partial thromboplastin time ≤1.2 × ULN).
- Must have normal renal function as estimated creatinine clearance >60 mL/min (Cockcroft-Gault formula).
NOTE: Other protocol defined Inclusion/Exclusion criteria may apply.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01462318
United States, Colorado | |
Research Site | |
Centennial, Colorado, United States, 80112 | |
United States, District of Columbia | |
Research Site | |
Washington, District of Columbia, United States, 20057 | |
United States, Illinois | |
Research Site | |
Lake Barrington, Illinois, United States, 60010 | |
United States, Kentucky | |
Research Site | |
Lexington, Kentucky, United States, 40513 | |
United States, Michigan | |
Research Site | |
Farmington Hills, Michigan, United States, 48334 | |
United States, Ohio | |
Research Site | |
Dayton, Ohio, United States, 45417 | |
United States, Tennessee | |
Research Site | |
Franklin, Tennessee, United States, 37064 | |
Czech Republic | |
Research Site | |
Brno, Czech Republic, 65691 | |
Research Site | |
Jihlava, Czech Republic, 58633 | |
Research Site | |
Ostrava, Czech Republic, 70852 | |
Research Site | |
Pardubice, Czech Republic, 53203 | |
Research Site | |
Teplice, Czech Republic, 41501 | |
Hungary | |
Research Site | |
Veszprem, Korhazu 1, Hungary, 8200 | |
Research Site | |
Budapest, Hungary, 1134 | |
Research Site | |
Debrecen, Hungary, 4031 | |
Research Site | |
Esztergom, Hungary, 2500 | |
Research Site | |
Szekesfehervar, Hungary | |
Poland | |
Research Site | |
Katowice, Poland | |
Research Site | |
Krakow, Poland, 31-501 |
Study Director: | Medical Director | Biogen |
Responsible Party: | Biogen |
ClinicalTrials.gov Identifier: | NCT01462318 |
Other Study ID Numbers: |
205MS302 2010-023856-97 ( EudraCT Number ) |
First Posted: | October 31, 2011 Key Record Dates |
Results First Posted: | March 14, 2017 |
Last Update Posted: | March 14, 2017 |
Last Verified: | January 2017 |
Pre-filled syringe Pharmacokinetic Daclizumab High Yield Process immunogenicity |
Multiple Sclerosis Multiple Sclerosis, Relapsing-Remitting Sclerosis Pathologic Processes Demyelinating Autoimmune Diseases, CNS Autoimmune Diseases of the Nervous System Nervous System Diseases Demyelinating Diseases Autoimmune Diseases Immune System Diseases Vitamin K Midazolam Dextromethorphan Caffeine Omeprazole |
Warfarin Daclizumab Vitamins Micronutrients Physiological Effects of Drugs Adjuvants, Anesthesia Hypnotics and Sedatives Central Nervous System Depressants Anti-Anxiety Agents Tranquilizing Agents Psychotropic Drugs Anesthetics, Intravenous Anesthetics, General Anesthetics GABA Modulators |