Approval Probability
TA Base Rate
Adjusted LOA
ML Risk
Telcagepant · 8 trials · 11 indications
Pain Freedom (PF) at 2 hours post-dose (first migraine attack), with pain freedom defined as a reduction in headache severity from Grade 3/2 at baseline to Grade 0 at 2 hours post-dose. Headache severity was subjectively rated by the participant at predefined time points on a scale of Grade 0 to Grade 3: Grade 0 - No pain; Grade 1 - Mild pain; Grade 2 - Moderate Pain; and Grade 3 - Severe Pain.
Pain Relief (PR) at 2 hours post-dose (first migraine attack), with pain relief defined as a reduction in headache severity from Grade 3/2 at baseline to Grade 1/0 at 2 hours post-dose. Headache severity was subjectively rated by the participant at predefined time points on a scale of Grade 0 to Grade 3: Grade 0 - No pain; Grade 1 - Mild pain; Grade 2 - Moderate Pain; and Grade 3 - Severe Pain.
Pain Freedom Consistency (PFC) at 2 hours post-dose, defined as having achieved PF at 2 hours post-dose on at least 3 treated migraine attacks. Note that for the control groups, a positive PF response arising from the administration of the 1 talcagepant treated migraine attack will count as one of the 3 positive PF responses needed to fulfill the criteria for PFC.
Pain Relief Consistency (PRC) at 2 hours post-dose, defined as having achieved PR at 2 hours post-dose on at least 3 treated migraine attacks. Note that for the control groups, a positive PR response arising from the administration of the 1 telcagepant treated migraine attack will count as one of the 3 positive PR responses needed to fulfill the criteria for PRC.
The participant recorded whether photophobia (sensitivity to light) was present or absent at each of the predefined time points.
The participant recorded whether phonophobia (sensitivity to sound) was present or absent at each of the predefined time points.
The participant recorded whether nausea was present or absent at each of the predefined time points.
AEs were reported following treatment for the first migraine attack using a 48-hour post-dose window. AEs displayed are those reported by at least 4 participants in one or more treatment groups.
Participants discontinuing study medication due to an AE were reported for all migraine attacks.
Pain Freedom (PF) at 2 hours post-dose (Period 1, Attack 1) defined as a decrease from a moderate or severe migraine headache (Grade 2 or 3) at baseline to no pain (Grade 0). Headache severity was subjectively rated by the participant at predefined time points on a scale of Grade 0 to Grade 3: Grade 0 - No pain; Grade 1 - Mild pain; Grade 2 - Moderate Pain; and Grade 3 - Severe Pain.
An AE is defined as any unfavorable and unintended sign including an abnormal laboratory finding, symptom or disease associated with the use of a medical treatment or procedure, regardless of whether it is considered related to the medical treatment or procedure, that occurs during the course of the study.
An AE is defined as any unfavorable and unintended sign including an abnormal laboratory finding, symptom or disease associated with the use of a medical treatment or procedure, regardless of whether it is considered related to the medical treatment or procedure, that occurs during the course of the study.
Participants were asked to rate their migraine headache severity with ratings of 0=No pain, 1=Mild pain, 2=Moderate pain, and 3=Severe pain. PF at 2 hours post-dose is defined as a decrease from a moderate or severe migraine headache (Grade 2 or 3) at baseline to no pain (Grade 0) at 2 hours post-dose.
Participants were asked to rate their migraine headache severity with ratings of 0=No pain, 1=Mild pain, 2=Moderate pain, and 3=Severe pain. PR at 2 hours post-dose is defined as a shift from a moderate or severe migraine headache (Grade 2 or 3) at baseline to mild or no pain (Grade 1 or 0) at 2 hours post-dose.
Participants were asked if they experienced any sensitivity to light. The number of participants who experienced no photophobia (sensitivity to light) at 2 hours post-dose was determined.
Participants were asked if they experienced any sensitivity to sound. The number of participants who experienced no phonophobia (sensitivity to sound) at 2 hours post-dose was determined.
Participants were asked if they experienced any nausea. The number of participants who experienced no nausea at 2 hours post-dose was determined.
An AE is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the study drug, whether or not considered related to the use of the product. Participants were monitored for occurrence AEs for up to 14 days after last dose study drug. Participants who took both active and placebo study drug were counted in the active group.
An AE is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the study drug, whether or not considered related to the use of the product. Participants who took both active and placebo study drug were counted in the active group.
An AE is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the study drug, whether or not considered related to the use of the study drug. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a preexisting condition which is temporally associated with the use of the study drug, is also an AE. A clinical AE is an AE reported as a result of a clinical examination or reported by the participant.
An AE is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the study drug, whether or not considered related to the use of the study drug. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a preexisting condition which is temporally associated with the use of the study drug, is also an AE. A clinical AE is an AE reported as a result of a clinical examination or reported by the participant.
An AE is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the study drug, whether or not considered related to the use of the study drug. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a preexisting condition which is temporally associated with the use of the study drug, is also an AE. A laboratory AE is an AE reported as a result of a laboratory assessment or test.
An AE is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the study drug, whether or not considered related to the use of the study drug. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a preexisting condition which is temporally associated with the use of the study drug, is also an AE. A laboratory AE is an AE reported as a result of a laboratory assessment or test.
Participants completed a headache diary each evening at bedtime, including recording headache duration and acute headache medication use. Mean monthly headache days was calculated from diary data. A headache day was defined as a day in which a headache (defined as headache pain ≥30 minute duration or requiring acute treatment) started, ended, or recurred. Headache pain persisting for more than 1 calendar day after initial onset was considered an occurrence of additional headache days. Mean monthly rate was adjusted to 28 days. Participant subgroups (based on symptoms over the 3 menstrual cycles prior to study): PMM - In ≥2 out of 3 cycles attacks occur exclusively on Day 1 ± 2 of menstruation and at no other times of the cycle; MRM - In ≥2 out of 3 cycles attacks occur on Day 1 ± 2 of menstruation and additionally at other times of the cycle.
Any AEs occurring among participants (all were healthy subjects) in Part I of study were recorded. An AE was defined as any unfavorable and unintended change in the structure, function or chemistry of the body temporally associated with study drug administration, whether or not considered related to the study drug. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a preexisting condition which was temporally associated with the administration of the study drug, was also an AE.
Any AEs occurring among participants (all were migraine patients) in Part III of study were recorded. An AE was defined as any unfavorable and unintended change in the structure, function or chemistry of the body temporally associated with study drug administration, whether or not considered related to the study drug. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a preexisting condition which was temporally associated with the administration of the study drug, was also an AE.
Brain CGRP RO post telcagepant was determined by change in \[11C\]MK-4232 PET tracer biokinetics at baseline and post telcagepant administration. Using PET brain images acquired over \~0-90 minutes after \[11C\]MK-4232 dose, regions of interest (ROIs) were drawn throughout cerebral cortex and white matter, striatum, thalamus, cerebellum and pons. The ROIs were projected onto all frames of the dynamic PET scans in order to generate \[11C\]MK-4232 tissue time-activity curves (TACs). Serial arterial blood samples for measurement of plasma radioactivity and \[11C\]MK-4232 concentrations were collected during the PET scans. These samples provided the arterial input function for a two-tissue compartmental model of \[11C\]MK-4232 tracer biokinetics. Total volume of distribution (VT), an index of receptor density, was estimated by fitting the two-tissue compartmental model to the PET \[11C\]MK-4232 TACs. Change in VT between baseline and post telcagepant PET studies was used to quantify the brain CGRP RO.
In Part I, Period 1 blood samples for determination of plasma telcagepant concentrations were obtained prior to the telcagepant dose (time 0) and at 2, 3, 4 and 5 hours post telcagepant dose. The average plasma telcagepant concentration during the PET scan was determined, calculated as the area under the plasma telcagepant concentration versus time curve during the PET scanning interval divided by the duration of the PET scanning interval.
Brain CGRP RO post telcagepant was determined by change in \[11C\]MK-4232 PET tracer biokinetics at baseline and post telcagepant administration. Using PET brain images acquired over \~0-90 miniutes after \[11C\]MK-4232 dose, ROIs were drawn throughout the cerebral cortex and white matter, striatum, thalamus, cerebellum and pons. The ROIs were projected onto all frames of the dynamic PET scans in order to generate \[11C\]MK-4232 tissue TACs. Serial arterial blood samples for measurement of plasma radioactivity and \[11C\]MK-4232 concentrations were collected during the PET scans. These samples provided the arterial input function for a two-tissue compartmental model of \[11C\]MK-4232 tracer biokinetics. VT, an index of receptor density, was estimated by fitting the two-tissue compartmental model to the PET \[11C\]MK-4232 TACs. The change in VT between the baseline and post telcagepant PET studies was used to quantify the brain CGRP RO.
In Part I, Period 2 blood samples for determination of plasma telcagepant concentrations were obtained prior to the telcagepant dose (time 0) and at 1, 2, 3 and 4 hours post telcagepant dose. The average plasma telcagepant concentration during the PET scan was determined, calculated as the area under the plasma telcagepant concentration versus time curve during the PET scanning interval divided by the duration of the PET scanning interval.
Brain CGRP RO post telcagepant was determined by change in \[11C\]MK-4232 PET tracer biokinetics at baseline and post telcagepant administration. Using PET brain images acquired over \~0-90 minutes after \[11C\]MK-4232 dose, ROIs were drawn throughout the cerebral cortex and white matter, striatum, thalamus, cerebellum and pons. The ROIs were projected onto all frames of the dynamic PET scans in order to generate \[11C\]MK-4232 tissue TACs. Serial arterial blood samples for measurement of plasma radioactivity and \[11C\]MK-4232 concentrations were collected during the PET scans. These samples provided the arterial input function for a two-tissue compartmental model of \[11C\]MK-4232 tracer biokinetics. VT, an index of receptor density, was estimated by fitting the two-tissue compartmental model to the PET \[11C\]MK-4232 TACs. The change in VT between the baseline and post telcagepant PET studies was used to quantify the brain CGRP RO.
Brain CGRP RO post telcagepant was determined by change in \[11C\]MK-4232 PET tracer biokinetics at baseline and post telcagepant administration. Using PET brain images acquired over \~0-90 minutes after \[11C\]MK-4232 dose, ROIs were drawn throughout the cerebral cortex and white matter, striatum, thalamus, cerebellum and pons. The ROIs were projected onto all frames of the dynamic PET scans in order to generate \[11C\]MK-4232 tissue TACs. Serial arterial blood samples for measurement of plasma radioactivity and \[11C\]MK-4232 concentrations were collected during the PET scans. These samples provided the arterial input function for a two-tissue compartmental model of \[11C\]MK-4232 tracer biokinetics. VT, an index of receptor density, was estimated by fitting the two-tissue compartmental model to the PET \[11C\]MK-4232 TACs. The change in VT between the baseline and post telcagepant PET studies was used to quantify the brain CGRP RO.
An AE was defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the product, whether or not considered related to the use of the product. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a preexisting condition which was temporally associated with the use of the product, was also an AE. A laboratory AE was an AE reported as a result of a laboratory assessment or test.
Bruce (and Modified Bruce) Protocol was used to assess the exercise duration on a treadmill. This protocol consists of a standardized gradual incremental increase in external workload every 3 minutes while the participant's electrocardiogram (ECG), symptoms, and arm blood pressure were continuously monitored. Regardless of whether the participant believed he or she could continue, the test was discontinued upon evidence of chest discomfort, severe shortness of breath, dizziness, fatigue, ST-segment depression of greater than 2 mm, a fall in systolic blood pressure exceeding 10 mmHg, or the development of a ventricular tachyarrhythmia
In each treatment period (1 through 4), duplicate readings of semi-recumbent blood pressure (BP) were completed using an automated blood pressure machine at predose, 30, 60, 90, 120, 150, 180, and 360 minutes postdose. Mean arterial pressure (MAP) was calculated as follows: MAP = Diastolic Blood Pressure (DBP) + (0.33 \* Pulse Pressure \[PP\]) where PP = Systolic Blood Pressure \[SBP\] minus DBP. Only mean arterial pressure measurements up to and including 150 minutes postdose (including the predose measurement) were used to calculate the time-weighted averages. Time-weighted averages for each participant were obtained by calculating the area under the measurement-time curve of mean arterial pressure divided by the time period over which measurements were made (i.e. 150 minutes).
| Arm | Type | Description |
|---|---|---|
| Telcagepant 140 mg | EXPERIMENTAL | Telcagepant 140 mg, oral, tablet, across 4 migraine attacks. For migraine attack 1 only, if no headache relief is obtained after 2 hours post dose, or if the migraine recurs after 2 hours of the initial treatment, participants may receive an optional second dose of telcagepant 140 mg or placebo. |
| Telcagepant 280 mg | EXPERIMENTAL | Telcagepant 280 mg, oral, tablet, across 4 migraine attacks. For migraine attack 1 only, if no headache relief is obtained after 2 hours post dose, or if the migraine recurs after 2 hours of the initial treatment, participants may receive an optional second dose of telcagepant 280 mg or placebo. |
| Control Group 1 | PLACEBO_COMPARATOR | Placebo, oral, tablet, across 3 migraine attacks (1st, 2nd, and 4th). Telcagepant 140 mg will be administered for the 3rd migraine attack. Participants will receive placebo for the optional second dose. For migraine attacks 2, 3, and 4, no study medication will be provided as an optional second dose. |
| Control Group 2 | PLACEBO_COMPARATOR | Placebo, oral, tablet, across 3 migraine attacks (1st, 2nd, and 3rd). Telcagepant 140 mg will be administered for the 4th migraine attack. Participants will receive placebo for the optional second dose. For migraine attacks 2, 3, and 4, no study medication will be provided as an optional second dose. |
| Telcagepant 300 mg→Acetaminophen/Paracetamol 1000 mg | EXPERIMENTAL | Participants receive up to 12 doses of telcagepant (280 mg tablet/capsule 300 mg), orally, and placebo to acetaminophen/paracetamol (APAP) (2- 500 mg dry filled capsules), orally, for up to 12 migraine attacks in Period 1 (6 weeks). Participants receive APAP and placebo to telcagepant for up to 12 doses, for up to 12 migraine attacks in Period 2 (6 weeks). The participant may take a blinded optional second dose of study medication or their own rescue medication if 2 hours after initial treatment, the participant still has a moderate or severe migraine headache or if the headache has returned. |
| Placebo and APAP 1000 mg→Telcagepant 300 mg | EXPERIMENTAL | Participants receive 1 dose of placebo to APAP and placebo to telcagepant for the first migraine attack and then up to 11 doses of APAP and placebo to telcagepant for up to 11 migraine attacks in Period 1 (6 weeks). Participants receive up to 12 doses of telcagepant and placebo to APAP for up to 12 migraine attacks in Period 2 (6 weeks). The participant may take a blinded optional second dose of study medication or their own rescue medication if 2 hours after initial treatment, the participant still has a moderate or severe migraine headache or if the headache has returned. |
| Telcagepant 150 mg | EXPERIMENTAL | Participants receive telcagepant 150 mg capsules, one capsule administered orally at initial onset of moderate to severe migraine headache. If, after 2 hours post-dose, participants still have a moderate to severe migraine or migraine recurs, participants may receive an optional second dose of study drug (telcagepant 150 mg or placebo) or one dose of non-study rescue medication. |
| Telcagepant 300 mg | EXPERIMENTAL | Participants receive telcagepant 300 mg capsules, one capsule administered orally at initial onset of moderate to severe migraine headache. If, after 2 hours post-dose, participants still have a moderate to severe migraine or migraine recurs, participants may receive an optional second dose of study drug (telcagepant 300 mg or placebo) or one dose of non-study rescue medication. |
| Zolmitriptan 5 mg | ACTIVE_COMPARATOR | Participants receive zolmitriptan 5 mg tablets, one tablet administered orally at initial onset of moderate to severe migraine headache. If, after 2 hours post-dose, participants still have a moderate to severe migraine or migraine recurs, participants may receive an optional second dose of study drug (placebo) or one dose of non-study rescue medication. |
| Placebo | PLACEBO_COMPARATOR | Participants receive placebo matching capsules or tablets, one capsule or tablet administered orally at initial onset of moderate to severe migraine headache. If, after 2 hours post-dose, participants still have a moderate to severe migraine or migraine recurs, participants may receive an optional second dose of study drug (placebo) or one dose of non-study rescue medication. |
| Telcagepant | EXPERIMENTAL | Telcagepant 140 mg was administered once daily at bedtime for 7 consecutive days each month, beginning at the onset of menses, for up to 6 months. Dosing could begin up to 3 days prior to menses onset if prodromal symptoms reliably predicted onset of menses. |
| Healthy Participants (Part I) | EXPERIMENTAL | Baseline PET imaging of the brain using \[11C\]MK-4232 tracer (\~300 megabecquerel \[MBq\]) was performed in healthy participants; this PET data served as the baseline for both Period 1 and 2 of Part I. Subsequently in study Part I, Period 1 the healthy participants received a single 1120 mg dose of telcagepant followed by PET imaging of brain with \[11C\]MK-4232 tracer (\~300 MBq) beginning \~3 hours post telcagepant dose. In Part I, Period 2 the healthy participants received a single 140 mg dose of telcagepant followed by PET imaging of brain with \[11C\]MK-4232 tracer (\~300 MBq) beginning \~2 hours post telcagepant dose. Interval between Part I Period 1 and 2 was to be at least 1 week. |
| Participants with Migraine (Part III) | EXPERIMENTAL | In study Part III, Period 1 baseline PET imaging of the brain using \[11C\]MK-4232 tracer (\~300 MBq) was performed in participants with migraine during a migraine attack (ictal phase). Later in Part III, Period 1 the participants with an ongoing migraine attack (ictal phase) received a single 140 mg dose of telcagepant followed by PET imaging of brain with \[11C\]MK-4232 tracer (\~300 MBq) beginning \~2 hours post telcagepant dose. In Part III, Period 2 baseline PET imaging of the brain using \[11C\]MK-4232 tracer (\~300 MBq) was performed in participants with migraine, however, without a migraine attack ongoing (interictal phase). Later in Part III, Period 2 participants with migraine without a migraine attack ongoing (interictal phase) received a single 140 mg dose of telcagepant followed by PET imaging of brain with \[11C\]MK-4232 tracer (\~300 MBq) beginning \~2 hours post telcagepant dose. Interval between Part III Period 1 and 2 was to be at least 1 week. |
| Telcagepant/ Placebo | EXPERIMENTAL | Participants receive single oral dose of 600 mg (two 300 mg capsules or two bioequivalent 280 mg tablets) or 900 mg telcagepant (three 300 mg capsules) in Period 1 and single oral dose of two capsules or tablets of placebo for telcagepant (or three capsules of placebo for telcagepant) in Period 2 of the crossover. Each treatment period is separated by a washout of 96-240 hours. |
| Placebo/Telcagepant | EXPERIMENTAL | Participants receive single oral dose of two capsules or tablets of placebo for telcagepant (or three capsules of placebo for telcagepant) in Period 1 and a single oral dose of 600 mg (two 300 mg capsules or two bioequivalent 280 mg tablets) or 900 mg telcagepant (three 300 mg capsules) in Period 2 of the crossover. Each treatment period is separated by a washout of 96-240 hours. |
| Sequence 1: A→C→D→B | EXPERIMENTAL | Participants receive the following: Period 1: single oral dose of 100 mg sumatriptan/600 mg telcagepant (Treatment A); Period 2: single oral dose of sumatriptan placebo/600 mg telcagepant (Treatment C); Period 3: single oral dose of sumatriptan placebo/telcagepant placebo (Treatment D); Period 4: single oral dose of 100 mg sumatriptan/telcagepant placebo (Treatment B). Each dosing period is separated by a 5-day washout. |
| Sequence 2: B→D→C→A | EXPERIMENTAL | Participants receive the following: Period 1: single oral dose of 100 mg sumatriptan/telcagepant placebo (Treatment B); Period 2: single oral dose of sumatriptan placebo/telcagepant placebo (Treatment D): Period 3: single oral dose of sumatriptan placebo/600 mg telcagepant (Treatment C); Period 4:single oral dose of 100 mg sumatriptan/600 mg telcagepant (Treatment A). Each dosing period is separated by a 5-day washout. |
| Sequence 3: C→B→A→D | EXPERIMENTAL | Participants receive the following: Period 1 :single oral dose of sumatriptan placebo/600 mg telcagepant (Treatment C), Period 2: single oral dose of 100 mg sumatriptan/telcagepant placebo (Treatment B); Period 3: single oral dose of 100 mg sumatriptan/600 mg telcagepant (Treatment A): Period 4: single oral dose of sumatriptan placebo/telcagepant placebo (Treatment D). Each dosing period is separated by a 5-day washout. |
| Sequence 4: D→A→B→C | EXPERIMENTAL | Participants receive the following: Period 1: single oral dose of sumatriptan placebo/telcagepant placebo (Treatment D), Period 2: single oral dose of 100 mg sumatriptan/600 mg telcagepant (Treament A); Period 3: single oral dose of 100 mg sumatriptan/telcagepant placebo (Treatment B); Period 4: single oral dose of sumatriptan placebo/600 mg telcagepant (Treatment C). Each dosing period is separated by a 5-day washout. |
| 1 | ACTIVE_COMPARATOR | MK-0974 12MoRT |
| 2 | ACTIVE_COMPARATOR | MK-0974 5Mo5C |
| 3 | ACTIVE_COMPARATOR | MK-0974 12Mo5C |
| Name | Type | Description |
|---|---|---|
| Telcagepant 140 mg | DRUG | Telcagepant 140 mg tablets |
| Talcagepant 280 mg | DRUG | Telcagepant 280 mg tablets |
| Placebo | DRUG | Placebo tablets |
| Telcagepant | DRUG | Telcagepant (MK-0974) (300 mg soft gel capsules or 280 mg tablets) |
| Acetaminophen/Paracetamol | DRUG | Acetaminophen/Paracetamol (500 mg X 2 dosage units) |
| Placebo to Telcagepant | DRUG | Placebo 300 mg soft gel capsules or placebo 280 mg tablet. |
| Placebo to Acetaminophen/Paracetamol | DRUG | Placebo to acetaminophen/paracetamol (500 mg X 2 dosage units) |
| Telcagepant potassium 150 mg | DRUG | Telcagepant 150 mg liquid-filled soft gel capsules |
| Telcagepant potassium 300 mg | DRUG | Telcagepant 300 mg liquid-filled soft gel capsules |
| Zolmitriptan 5 mg | DRUG | Zolmitriptan 5 mg tablets |
| Placebo to telcagepant 150 mg | DRUG | Placebo to match telcagepant 150 mg liquid-filled soft gel capsules |
| Placebo to tecagepant 300 mg | DRUG | Placebo to match tecagepant 300 mg liquid-filled soft gel capsules |
| Placebo to zolmitriptan 5 mg | DRUG | Placebo to match zolmitriptan 5 mg tablets |
| Rescue medication | DRUG | If moderate or severe migraine headache pain continues or recurs 2 hours after dose of study drug, participants are allowed to take an optional second dose of study drug or their own non-study rescue migraine medication, which may include analgesics (e.g., nonsteroidal anti-inflammatory drugs \[NSAIDs\] or opiates), anti-emetics, or zolmitriptan. Triptans other than zolmitriptan and ergot derivatives are prohibited for 24 hours following the last dose of study drug. |
| [11C]MK-4232 | DRUG | Single intravenous doses of \~300 MBq \[11C\]MK-4232 administered as a 5 minute infusion (Part I - Baseline, Period 1 and 2; Part III - Period 1 Baseline and Period 1, and Period 2 Baseline and Period 2) |
| telcagepant potassium | DRUG | Single oral dose of 2 x 300 mg capsules. |
| sumatriptan | DRUG | single oral dose of 100 mg sumatriptan |
| sumatriptan placebo | DRUG | single oral dose |
| telcagepant potassium placebo | DRUG | single oral dose of 2 MK-0974 placebo capsules |
| MK-0974 5Mo5C | DRUG | Single dose MK-0974 5Mo5C (5 month aged MK-0974 capsules, stored at 5 °C) 300 mg in one of three treatment periods |
| MK-0974 12Mo5C | DRUG | Single dose MK-0974 12Mo5C (12 month aged MK-0974 capsules, stored at 5 °C) 300 mg in one of three treatment periods |
Inclusion Criteria: * History of migraines within the past year * 1 to 8 moderate or severe migraine attacks per month in the past 2 months that lasted between 4 to 72 hours if untreated * Use acceptable contraception throughout the study * Able to complete the study questionnaire(s) and paper diar...
Telcagepant is an investigational small molecule being developed for the treatment of migraine disorders, including migraine and angina pectoris. It was studied in clinical trials for acute migraine treatment and for its effects on exercise tolerance in patients with stable angina.
Telcagepant targets the calcitonin gene-related peptide receptor, which is involved in migraine pathophysiology. By blocking this receptor, the drug is designed to prevent the vasodilation and inflammation associated with migraine attacks.
Telcagepant is being developed by Merck & Company, Inc., a pharmaceutical company traded on the New York Stock Exchange under the ticker symbol MRK.
Telcagepant has completed Phase 3 clinical trials for migraine treatment. It is an investigational drug and has not been approved by the FDA. All four clinical trials listed for Telcagepant are completed, with no active trials currently ongoing.
Telcagepant has completed four clinical trials. The Phase 3 trial NCT00662818 evaluated its use in migraine patients with stable vascular disease. Phase 1 trials include NCT00701389, studying its safety and blood pressure effects with sumatriptan; NCT01209741, assessing bioavailability of aged tablets; and NCT01294709, examining its effects on exercise tolerance in stable angina patients.
Yes, Telcagepant is also known as MK-0974. Clinical trial records refer to the drug by both names, with MK-0974 being the compound identifier used by Merck during development.