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RELPAX

Phase 3

Migraine Disorders | Small molecule | Neurology |GSK plc|Last Updated: Feb 12, 2018

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedCONTROLLEDBiomarker
Total Trials1
Total Enrollment20
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00385008TREXIMA and RELPAX Gastric Scintigraphy Inside and Outside a MigrainePHASE3 COMPLETED 20Sep 13, 2006Nov 24, 2006Feb 12, 20181 United States
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Study Endpoints
Primary Endpoints
Time to 10%, 50%, 90% and Complete Gastric Empting of the Radioactive Markers Representing Sumatriptan, Naproxen and Eletriptan
Day 1 of each treatment administration (For 30 days)

Scintigraphic images were analyzed in a time-lapse format and regions of interest were drawn to include the stomach and small intestine. Images were recorded in a supine position and a series of 3 to 60 consecutive anterior scintigraphic images, each 1 minute in duration, were recorded using a clinical grade gamma camera. After this initial continuous imaging sequence, additional images were recorded to coincide with pharmacokinetic (PK) blood sampling times as necessary to monitor the tablet disintegration and transit time through the intestines. Prior to ingesting the radiolabeled dosage forms, two external markers (2-3 microcuries of indium-111 or technetium-99m) were placed on each participant to facilitate consistent positioning underneath the gamma camera. The first marker was placed on the right side of the participant's chest (approximately at the fifth intercostal rib) and a second marker was placed on the hip bone (approximately the left anterior superior ileac spine).

Mean Area Under the Drug Concentration Time Curve (AUC) From Time of Dosing Through 2 Hour Post-dose [AUC (0-2)], Through 24 Hour [AUC (0-24)] and AUC From Time of Dosing Extrapolated to Infinity [AUC (0-inf)] for Sumatriptan and Naproxen
Pre-dose and then at 5 minute intervals through 60 minutes, at 75 minutes, every 30 minutes from 90 minutes through 6 hours, and at 8, 10, 12, 24, 48 and 72 hours post-dose for each treatment administered.

Following TREXIMA administration, 6 mL blood sample was collected at pre-dose and then at 5, 10 , 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, and 75 minutes. Then at 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6 hour and at 8, 10, 12, 24, 48, 72 hour post-dose for each treatment administered. All available plasma supernatant was withdrawn from the precipitated blood fraction.

Mean AUC (0-inf) and AUC (0-2) for Eletriptan
Pre-dose and then at 5 minute intervals through 60 minutes, at 75 minutes, every 30 minutes from 90 minutes through 6 hours, and at 8, 10, 12 hours post-dose for each treatment administered.

Following Relpax administration, 8 mL blood sample was collected at pre-dose and then at 5, 10 , 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, and 75 minutes. Then at 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6 hour and at 8, 10, 12 hour post-dose for each treatment administered. All available plasma supernatant was withdrawn from the precipitated blood fraction.

Maximum Observed Drug Concentration (Cmax) for Sumatriptan and Naproxen
Pre-dose and then at 5 minute intervals through 60 minutes, at 75 minutes, every 30 minutes from 90 minutes through 6 hours, and at 8, 10, 12, 24, 48 and 72 hours post-dose for each treatment administered.

Following TREXIMA administration, 6 mL blood sample was collected at pre-dose and then at 5, 10 , 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, and 75 minutes. Then at 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6 hour and at 8, 10, 12, 24, 48, 72 hour post-dose for each treatment administered. All available plasma supernatant was withdrawn from the precipitated blood fraction.

Cmax for Eletriptan
Pre-dose and then at 5 minute intervals through 60 minutes, at 75 minutes, every 30 minutes from 90 minutes through 6 hours, and at 8, 10, 12 hours post-dose for each treatment administered.

Following Relpax administration, 8 mL blood sample was collected at pre-dose and then at 5, 10 , 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, and 75 minutes. Then at 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6 hour and at 8, 10, 12 hour post-dose for each treatment administered. All available plasma supernatant was withdrawn from the precipitated blood fraction.

Time of Maximal Drug Concentration (Tmax) for Sumatriptan and Naproxen
Pre-dose and then at 5 minute intervals through 60 minutes, at 75 minutes, every 30 minutes from 90 minutes through 6 hours, and at 8, 10, 12, 24, 48 and 72 hours post-dose for each treatment administered.

Following TREXIMA administration, 6 mL blood sample was collected at pre-dose and then at 5, 10 , 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, and 75 minutes. Then at 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6 hour and at 8, 10, 12, 24, 48, 72 hour post-dose for each treatment administered. All available plasma supernatant was withdrawn from the precipitated blood fraction.

Tmax for Eletriptan
Pre-dose and then at 5 minute intervals through 60 minutes, at 75 minutes, every 30 minutes from 90 minutes through 6 hours, and at 8, 10, 12 hours post-dose for each treatment administered.

Following Relpax administration, 8 mL blood sample was collected at pre-dose and then at 5, 10 , 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, and 75 minutes. Then at 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6 hour and at 8, 10, 12 hour post-dose for each treatment administered. All available plasma supernatant was withdrawn from the precipitated blood fraction.

Time to Complete Dispersion of the Sumatriptan and Naproxen Portions of the TREXIMA Tablet and of the Relpax Tablet
Day 1 of each treatment administered (For 30 days)

Scintigraphic images were analyzed in a time-lapse format and regions of interest were to be drawn to include the stomach and small intestine. Images were recorded in a supine position and a series of 3 to 60 consecutive anterior scintigraphic images, each 1 minute in duration, were recorded using a clinical grade gamma camera. After this initial continuous imaging sequence, additional images were recorded to coincide with PK blood sampling times as necessary to monitor the tablet disintegration and transit time through the intestines. Prior to ingesting the radiolabeled dosage forms, two external markers (2-3 microcuries of indium-111 or technetium-99m) were placed on each participant to facilitate consistent positioning underneath the gamma camera. The first marker was placed on the right side of the participant's chest (approximately at the fifth intercostal rib) and a second marker was placed on the hip bone (approximately the left anterior superior ileac spine).

Time to First Appearance of Sumatriptan, Naproxen and Eletriptan at the Proximal Small Intestine
Day 1 of each treatment administered (For 30 days)

Scintigraphic images were analyzed in a time-lapse format and regions of interest were to be drawn to include the stomach and small intestine. Images were recorded in a supine position and a series of 3 to 60 consecutive anterior scintigraphic images, each 1 minute in duration, were recorded using a clinical grade gamma camera. After this initial continuous imaging sequence, additional images were recorded to coincide with PK blood sampling times as necessary to monitor the tablet disintegration and transit time through the intestines. Prior to ingesting the radiolabeled dosage forms, two external markers (2-3 microcuries of indium-111 or technetium-99m) were placed on each participant to facilitate consistent positioning underneath the gamma camera. The first marker was placed on the right side of the participant's chest (approximately at the fifth intercostal rib) and a second marker was placed on the hip bone (approximately the left anterior superior ileac spine).

Small Intestine Transit and Residence (Time to 50% Through Intestine) of the Radioactive Markers Representing Sumatriptan, Naproxen and Eletriptan
Day 1 of each treatment administered (For 30 days)

Scintigraphic images were analyzed in a time-lapse format and regions of interest were to be drawn to include the stomach and small intestine. Images were recorded in a supine position and a series of 3 to 60 consecutive anterior scintigraphic images, each 1 minute in duration, were recorded using a clinical grade gamma camera. After this initial continuous imaging sequence, additional images were recorded to coincide with PK blood sampling times as necessary to monitor the tablet disintegration and transit time through the intestines. Prior to ingesting the radiolabeled dosage forms, two external markers (2-3 microcuries of indium-111 or technetium-99m) were placed on each participant to facilitate consistent positioning underneath the gamma camera. The first marker was placed on the right side of the participant's chest (approximately at the fifth intercostal rib) and a second marker was placed on the hip bone (approximately the left anterior superior ileac spine).

Secondary Endpoints
Number of Participants With Any Adverse Events (AEs) and Serious Adverse Events (SAEs)
Up to Day 30
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Arm 1OTHERopen-label active drug
Arm 2OTHERopen-label active drug
Interventions
NameTypeDescription
Combination Product (sumatriptan succinate / naproxen sodium)DRUGsumatriptan/naproxen sodium
RELPAX(eletriptan) 40mg TabletDRUGeletriptan tablets
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Eligibility Criteria
Age Range18 Years — 55 Years
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: * Consented males and nonpregnant females using adequate contraception, between 18 and 55 years of age, with at least 1-6 migraines per month for past 6 months. Subjects will be excluded for confirmed or suspected ischemic heart disease, uncontrolled hypertension at screening; a...

Countries:United States
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