Patient Exposure
TRINTELLIX was evaluated for safety in 5,852 patients (18 years to 88 years of age) diagnosed with MDD who participated in pre- and postmarketing clinical studies; 2,616 of those patients were exposed to TRINTELLIX in 6 to 8 week, placebo-controlled studies at doses ranging from 5 mg to 20 mg once daily; 204 patients were exposed to TRINTELLIX in a 24 to 64 week placebo-controlled maintenance study at doses of 5 mg to 10 mg once daily; and 429 patients were exposed to TRINTELLIX in a 32 week placebo-controlled maintenance study in the U.S. at doses of 5 mg, 10 mg, and 20 mg, once daily. Patients from the 6 to 8 week studies continued into 12-month open-label studies. A total of 2,586 patients were exposed to at least one dose of TRINTELLIX in open-label studies, 1,727 were exposed to TRINTELLIX for 6 months and 885 were exposed for at least 1 year.
Adverse Reactions Reported as Reasons for Discontinuation of Treatment
In pooled 6 to 8 week placebo-controlled studies the incidence of patients who received TRINTELLIX 5 mg/day, 10 mg/day, 15 mg/day and 20 mg/day and discontinued treatment because of an adverse reaction was 5%, 6%, 8% and 8%, respectively, compared to 4% of placebo-treated patients. Nausea was the most common adverse reaction reported as a reason for discontinuation.
Common Adverse Reactions in Placebo-Controlled MDD Studies
The most commonly observed adverse reactions in MDD patients treated with TRINTELLIX in 6 to 8 week placebo-controlled studies (incidence ≥5% and at least twice the rate of placebo) were nausea, constipation and vomiting.
Table 2shows the incidence of common adverse reactions that occurred in ≥2% of MDD patients treated with any TRINTELLIX dose and at least 2% more frequently than in placebo-treated patients in the 6 to 8 week placebo-controlled studies.
Table 2: Adverse Reactions Occurring in ≥2% of Patients Treated with Any TRINTELLIX Dose and at Least 2% Greater Than the Incidence in Placebo-Treated Patients| System Organ Class Preferred Term | TRINTELLIX
5 mg/day
| TRINTELLIX
10 mg/day
| TRINTELLIX
15 mg/day
| TRINTELLIX
20 mg/day
| Placebo |
|---|
N=1013
%
| N=699
%
| N=449
%
| N=455
%
| N=1621
%
|
|---|
| Gastrointestinal disorders |
| Nausea | 21 | 26 | 32 | 32 | 9 |
| Diarrhea | 7 | 7 | 10 | 7 | 6 |
| Dry mouth | 7 | 7 | 6 | 8 | 6 |
| Constipation | 3 | 5 | 6 | 6 | 3 |
| Vomiting | 3 | 5 | 6 | 6 | 1 |
| Flatulence | 1 | 3 | 2 | 1 | 1 |
| Nervous system disorders |
| Dizziness | 6 | 6 | 8 | 9 | 6 |
| Psychiatric disorders |
| Abnormal dreams | <1 | <1 | 2 | 3 | 1 |
| Skin and subcutaneous tissue disorders |
| Pruritus
includes pruritus generalized | 1 | 2 | 3 | 3 | 1 |
Nausea
Nausea was the most common adverse reaction and its frequency was dose-related
(Table 2). It was usually considered mild or moderate in intensity and the median duration was two weeks. Nausea was more common in females than males. Nausea most commonly occurred in the first week of TRINTELLIX treatment with 15 to 20% of patients experiencing nausea after one to two days of treatment. Approximately 10% of patients taking TRINTELLIX 10 mg/day to 20 mg/day had nausea at the end of the 6 to 8 week placebo-controlled studies.
Sexual Dysfunction
Difficulties in sexual desire, sexual performance and sexual satisfaction often occur as manifestations of psychiatric disorders or comorbid conditions, but they may also be consequences of pharmacologic treatment, including TRINTELLIX. In addition to the data from the MDD studies mentioned below, TRINTELLIX has been prospectively assessed for its effects in MDD patients with existing TESD induced by prior SSRI treatment and in healthy adults with normal sexual function at baseline
[see
Clinical Studies (14)]
.
Voluntarily Reported Adverse Reactions of Sexual Dysfunction
In the MDD 6 to 8 week controlled trials of TRINTELLIX, voluntarily reported adverse reactions related to sexual dysfunction were captured as individual event terms. These event terms have been aggregated and the overall incidence was as follows. In male patients the overall incidence was 3%, 4%, 4%, 5% in TRINTELLIX 5 mg/day, 10 mg/day, 15 mg/day, 20 mg/day, respectively, compared to 2% in placebo. In female patients, the overall incidence was <1%, 1%, <1%, 2% in TRINTELLIX 5 mg/day, 10 mg/day, 15 mg/day, 20 mg/day, respectively, compared to <1% in placebo.
Adverse Reactions of Sexual Dysfunction in Patients with Normal Sexual Functioning at Baseline
Because voluntarily reported adverse sexual reactions are known to be underreported, in part because patients and physicians may be reluctant to discuss them, the Arizona Sexual Experiences Scale (ASEX), a validated measure designed to identify sexual side effects, was used prospectively in seven placebo-controlled trials. The ASEX scale includes five questions that pertain to the following aspects of sexual function: 1) sex drive, 2) ease of arousal, 3) ability to achieve erection (men) or lubrication (women), 4) ease of reaching orgasm, and 5) orgasm satisfaction.
The presence or absence of sexual dysfunction among patients entering clinical studies was based on their self-reported ASEX scores. For patients without sexual dysfunction at baseline (approximately 1/3 of the population across all treatment groups in each study),
Table 3shows the incidence of patients that developed TESD when treated with TRINTELLIX or placebo in any fixed dose group. Physicians should routinely inquire about possible sexual side effects.
Table 3: ASEX Incidence of Treatment Emergent Sexual Dysfunction
Incidence based on number of subjects with sexual dysfunction during the study/number of subjects without sexual dysfunction at baseline. Sexual dysfunction was defined as a subject scoring any of the following on the ASEX scale at two consecutive visits during the study: 1) total score ≥19; 2) any single item ≥5; 3) three or more items each with a score ≥4
| TRINTELLIX
5 mg/day
N=65:67
| TRINTELLIX
10 mg/day
N=94:86
| TRINTELLIX
15 mg/day
N=57:67
| TRINTELLIX
20 mg/day
N=67:59
| Placebo
N=135:162
|
|---|
| Females | 22% | 23% | 33% | 34% | 20% |
| Males | 16% | 20% | 19% | 29% | 14% |
Adverse Reactions Following Abrupt Discontinuation of TRINTELLIX Treatment
Discontinuation symptoms have been prospectively evaluated in patients taking TRINTELLIX 10 mg/day, 15 mg/day, and 20 mg/day using the Discontinuation-Emergent Signs and Symptoms (DESS) scale in clinical trials. Some patients experienced discontinuation symptoms such as headache, muscle tension, mood swings, sudden outbursts of anger, dizziness, and runny nose in the first week of abrupt discontinuation of TRINTELLIX 15 mg/day and 20 mg/day.
Laboratory Tests
TRINTELLIX has not been associated with any clinically important changes in laboratory test parameters in serum chemistry (except sodium), hematology and urinalysis as measured in the 6 to 8 week placebo-controlled studies. Hyponatremia has been reported with the treatment of TRINTELLIX
[see
Warnings and Precautions (5.7)]
. In the 6-month, double-blind, placebo-controlled phase of a long-term study in patients who had responded to TRINTELLIX during the initial 12 week, open-label phase, there were no clinically important changes in lab test parameters between TRINTELLIX and placebo-treated patients.
Weight
TRINTELLIX had no significant effect on body weight as measured by the mean change from baseline in the 6 to 8 week placebo-controlled studies. In the six month, double-blind, placebo-controlled phase of a long-term study in patients who had responded to TRINTELLIX during the initial 12-week, open-label phase, there was no significant effect on body weight between TRINTELLIX and placebo-treated patients.
Vital Signs
TRINTELLIX has not been associated with any clinically significant effects on vital signs, including systolic and diastolic blood pressure and heart rate, as measured in placebo-controlled studies.
Other Adverse Reactions Observed in Clinical Studies
The following listing does not include reactions: 1) already listed in previous tables or elsewhere in labeling, 2) for which a drug cause was remote, 3) which were so general as to be uninformative, 4) which were not considered to have significant clinical implications, or 5) which occurred at a rate equal to or less than placebo.
Ear and labyrinth disorders —vertigo
Gastrointestinal disorders —dyspepsia
Nervous system disorders —dysgeusia
Vascular disorders —flushing
Other CNS Active Agents
No clinically relevant effect was observed on steady-state lithium exposure following coadministration with multiple daily doses of TRINTELLIX. Multiple doses of TRINTELLIX did not affect the pharmacokinetics or pharmacodynamics (composite cognitive score) of diazepam
[see
Clinical Pharmacology (12.3)]
.
A clinical study has shown that TRINTELLIX (single dose of 20 or 40 mg) did not increase the impairment of mental and motor skills caused by alcohol (single dose of 0.6 g/kg)
[see
Clinical Pharmacology (12.3)]
.
Drugs That Interfere with Hemostasis
Following coadministration of stable doses of warfarin (1 to 10 mg/day) with multiple daily doses of TRINTELLIX, no significant effects were observed in INR, prothrombin values or total warfarin (protein bound plus free drug) pharmacokinetics for both R- and S-warfarin. Coadministration of aspirin 150 mg/day with multiple daily doses of TRINTELLIX had no significant inhibitory effect on platelet aggregation or pharmacokinetics of aspirin and salicylic acid
[see
Clinical Pharmacology (12.3)]
. Patients receiving other drugs that interfere with hemostasis should be carefully monitored when TRINTELLIX is initiated or discontinued
[see
Warnings and Precautions (5.3),
Drug Interactions (7.1)]
.
Highly Protein Bound Drugs
In a clinical study with coadministration of TRINTELLIX (10 mg/day) and warfarin (1 mg/day to 10 mg/day), a highly protein bound drug, no significant change in INR was observed
[see
Drug Interactions (7.1),
Clinical Pharmacology (12.3)]
.
Pregnancy Exposure Registry
There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to antidepressants during pregnancy. Healthcare providers are encouraged to register patients by calling the National Pregnancy Registry for Antidepressants at 1-844-405-6185 or visiting online at https://womensmentalhealth.org/clinical-and-research-programs/pregnancyregistry/antidepressants/.
Risk Summary
Based on data from published observational studies, exposure to SSRIs or SNRIs, particularly in the month before delivery, has been associated with a less than 2-fold increase in the risk of postpartum hemorrhage
[see
Warnings and Precautions (5.3)and
Clinical Considerations]
.
There are limited human data on TRINTELLIX use during pregnancy to inform any drug-associated risks. However, there are clinical considerations regarding neonates exposed to SSRIs and SNRIs, including TRINTELLIX, during the third trimester of pregnancy
[see
Clinical Considerations]
. Vortioxetine administered to pregnant rats and rabbits during the period of organogenesis at doses ≥15 times and 10 times the maximum recommended human dose (MRHD), respectively, resulted in decreased fetal body weight and delayed ossification. No malformations were seen at doses up to 77 times and 58 times the MRHD, respectively. Vortioxetine administered to pregnant rats during gestation and lactation at oral doses ≥20 times the MRHD resulted in a decrease in the number of live-born pups and an increase in early postnatal pup mortality. Decreased pup weight at birth to weaning occurred at 58 times the MRHD and delayed physical development occurred at ≥20 times the MRHD. These effects were not seen at 5 times the MRHD
[see
Data]
. Advise a pregnant woman of the potential risk to a fetus.
The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2-4% and 15-20%, respectively.
Clinical Considerations
Disease-associated Maternal and/or Embryo/Fetal Risk
A prospective, longitudinal study followed 201 pregnant women with a history of major depressive disorder who were euthymic and taking antidepressants at the beginning of pregnancy. The women who discontinued antidepressants during pregnancy were more likely to experience a relapse of major depression than women who continued antidepressants. Consider the risks of untreated depression when discontinuing or changing treatment with antidepressant medication during pregnancy and postpartum.
Fetal/Neonatal Adverse Reactions
Exposure to serotonergic antidepressants, including TRINTELLIX, in late pregnancy may lead to an increased risk for neonatal complications requiring prolonged hospitalization, respiratory support, and tube feeding, and/or persistent pulmonary hypertension of the newborn (PPHN). Monitor neonates who were exposed to TRINTELLIX in the third trimester of pregnancy for PPHN and drug discontinuation syndrome
[see
Data]
.
Maternal Adverse Reactions
Use of TRINTELLIX in the month before delivery may be associated with an increased risk of postpartum hemorrhage
[see
Warnings and Precautions (5.3)].
Data
Human Data
Third Trimester Exposure
Neonates exposed to SSRIs or SNRIs, late in the third trimester have developed complications requiring prolonged hospitalization, respiratory support and tube feeding. These findings are based on postmarketing reports. Such complications can arise immediately upon delivery. Reported clinical findings have included respiratory distress, cyanosis, apnea, seizures, temperature instability, feeding difficulty, vomiting, hypoglycemia, hypotonia, hypertonia, hyperreflexia, tremor, jitteriness, irritability and constant crying. These features are consistent with either a direct toxic effect of SSRIs and SNRIs or possibly, a drug discontinuation syndrome. In some cases, the clinical picture was consistent with serotonin syndrome
[see
Warnings and Precautions (5.2)]
.
Exposure during late pregnancy to SSRIs may have an increased risk for persistent pulmonary hypertension of the newborn (PPHN). PPHN occurs in one to two per 1,000 live births in the general population and is associated with substantial neonatal morbidity and mortality. In a retrospective case-control study of 377 women whose infants were born with PPHN and 836 women whose infants were born healthy, the risk for developing PPHN was approximately six fold higher for infants exposed to SSRIs after the 20th week of gestation compared to infants who had not been exposed to antidepressants during pregnancy. A study of 831,324 infants born in Sweden in 1997 - 2005 found a PPHN risk ratio of 2.4 (95% CI 1.2-4.3) associated with patient-reported maternal use of SSRIs "in early pregnancy" and a PPHN risk ratio of 3.6 (95% CI 1.2-8.3) associated with a combination of patient-reported maternal use of SSRIs "in early pregnancy" and an antenatal SSRI prescription "in later pregnancy."
Animal Data
In pregnant rats and rabbits, no malformations were seen when vortioxetine was given during the period of organogenesis at oral doses up to 160 and 60 mg/kg/day, respectively. These doses are 77 and 58 times the maximum recommended human dose (MRHD) of 20 mg on a mg/m
2basis, in rats and rabbits, respectively. Developmental delay, seen as decreased fetal body weight and delayed ossification, occurred in rats and rabbits at doses equal to and greater than 30 and 10 mg/kg (15 and 10 times the MRHD, respectively) in the presence of maternal toxicity (decreased food consumption and decreased body weight gain). When vortioxetine was administered to pregnant rats at oral doses of 40 and 120 mg/kg (20 and 58 times the MRHD, respectively) throughout pregnancy and lactation, the number of live-born pups was decreased and early postnatal pup mortality was increased. Additionally, pup weights were decreased at birth to weaning at 120 mg/kg and development (specifically eye opening) was slightly delayed at 40 and 120 mg/kg. These effects were not seen at 10 mg/kg (5 times the MRHD).
Risk Summary
There is no information regarding the presence of vortioxetine in human milk, the effects on the breastfed infant, or the effects on milk production. Vortioxetine is present in rat milk
[see
Data]
. The developmental and health benefits of breastfeeding should be considered along with the mother's clinical need for TRINTELLIX and any potential adverse effects on the breastfed child from TRINTELLIX or from the underlying maternal condition.
Data
Animal Data
Administration of [
14C]-vortioxetine to lactating rats at an oral dose of 20 times the maximum recommended human dose (MRHD) of 20 mg on a mg/m
2basis, resulted in drug-related material in milk secretion. Milk to plasma ratio in lactating rats was 1, 1.2, 0.5, and 0.5 at 2, 6, 24, and 72 hours post dose.
Juvenile Animal Toxicity Data
Administration of vortioxetine to juvenile rats (oral doses of 10, 20, and 40 mg/kg/day twice daily from Postnatal Day 21 to 91) resulted in a neurobehavioral effect at the highest dose of 40 mg/kg twice daily (increased peak auditory startle amplitude) during the treatment period. The effect was not seen at the end of the recovery period. When animals were mated after the 4-week recovery period, viability was decreased in the offspring of mated pairs treated with 40 mg/kg twice daily. The no-observed adverse effect dose was 20 mg/kg twice daily based on both the neurobehavioral and reproductive effects. This dose was associated with plasma vortioxetine exposure (AUC) approximately 2 times that in pediatric patients.
Effect on Cardiac Repolarization
The effect of vortioxetine 10 mg and 40 mg administered once daily on QTc interval was evaluated in a randomized, double-blind, placebo-, and active-controlled (moxifloxacin 400 mg), four-treatment-arm parallel study in 340 male subjects. In the study the upper bound of the one-sided 95% confidence interval for the QTc was below 10 ms, the threshold for regulatory concern. The oral dose of 40 mg is sufficient to assess the effect of metabolic inhibition.
Effect on Driving Performance
In a clinical study in healthy subjects, TRINTELLIX did not impair driving performance, or have adverse psychomotor or cognitive effects following single and multiple doses of 10 mg/day.
Absorption
The maximal plasma vortioxetine concentration (C
max) after dosing is reached within 7 to 11 hours postdose (T
max). Steady-state mean C
maxvalues were 9, 18, and 33 ng/mL following doses of 5, 10, and 20 mg/day. Absolute bioavailability is 75%.
Effect of Food
No effect of food on the pharmacokinetics was observed.
Distribution
The apparent volume of distribution of vortioxetine is approximately 2600 L, indicating extensive extravascular distribution. The plasma protein binding of vortioxetine in humans is 98%, independent of plasma concentrations. No apparent difference in the plasma protein binding between healthy subjects and subjects with hepatic (mild, moderate or severe) or renal (mild, moderate, severe, ESRD) impairment is observed.
Elimination
Metabolism
Vortioxetine is extensively metabolized primarily through oxidation via cytochrome P450 isozymes CYP2D6, CYP3A4/5, CYP2C19, CYP2C9, CYP2A6, CYP2C8 and CYP2B6 and subsequent glucuronic acid conjugation. CYP2D6 is the primary enzyme catalyzing the metabolism of vortioxetine to its major, pharmacologically inactive, carboxylic acid metabolite, and poor metabolizers of CYP2D6 have approximately twice the vortioxetine plasma concentration of extensive metabolizers
[see
Dosage and Administration (2.5)]
.
Excretion
Following a single oral dose of [
14C]-labeled vortioxetine, approximately 59% and 26% of the administered radioactivity was recovered in the urine and feces, respectively as metabolites. Negligible amounts of unchanged vortioxetine were excreted in the urine up to 48 hours. The presence of hepatic (mild, moderate or severe) or renal impairment (mild, moderate, severe and ESRD) did not affect the apparent clearance of vortioxetine.
Specific Populations
No clinically significant differences in the exposures of vortioxetine were observed based on age, gender, ethnicity, renal function, or hepatic function.
The effects of intrinsic patient factors on the pharmacokinetics of vortioxetine are presented in
Figure 1.
Figure 1. Impact of Intrinsic Factors on Vortioxetine PK
Drug Interaction Studies
Clinical Studies
Other Drugs on TRINTELLIX
The effects of other drugs on vortioxetine exposure are summarized in
Figure 2.
Figure 2. Impact of Other Drugs on Vortioxetine PK
TRINTELLIX on Other Drugs
The effects of vortioxetine on the exposures of other drugs are summarized in
Figure 3.
Figure 3. Impact of Vortioxetine on PK of Other Drugs
In Vitro
Vortioxetine and its metabolite(s) are unlikely to inhibit the following CYP enzymes and transporter based on
in vitrodata: CYP1A2, CYP2A6, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, CYP2E1, CYP3A4/5, P-gp, BCRP, BSEP, MATE1, MATE2-K, OAT1, OAT3, OATP1B1, OATP1B3, OCT1 and OCT2. As such, no clinically relevant interactions with drugs metabolized/transported by these CYP enzymes or transporters would be expected.
In addition, vortioxetine did not induce CYP1A2, CYP2A6, CYP2B6, CYP2C8, CYP2C9, CYP2C19, and CYP3A4/5 in an
in vitrostudy in cultured human hepatocytes. Chronic administration of TRINTELLIX is unlikely to induce the metabolism of drugs metabolized by these CYP isoforms. Furthermore, in a series of clinical drug interaction studies, coadministration of TRINTELLIX with substrates for CYP2B6 (e.g., bupropion), CYP2C9 (e.g., warfarin), and CYP2C19 (e.g., diazepam), had no clinical meaningful effect on the pharmacokinetics of these substrates.
Carcinogenesis
Carcinogenicity studies were conducted in which CD-1 mice and Wistar rats were given oral doses of vortioxetine up to 50 and 100 mg/kg/day for male and female mice, respectively, and 40 and 80 mg/kg/day for male and female rats, respectively, for two years. The doses in the two species were approximately 12, 24, 20, and 39 times, respectively, the maximum recommended human dose (MRHD) of 20 mg on a mg/m
2basis.
In rats, the incidence of benign polypoid adenomas of the rectum was statistically significantly increased in females at doses 39 times the MRHD, but not at 15 times the MRHD. These were considered related to inflammation and hyperplasia and possibly caused by an interaction with a vehicle component of the formulation used for the study. The finding did not occur in male rats at 20 times the MRHD.
In mice, vortioxetine was not carcinogenic in males or females at doses up to 12 and 24 times, respectively, the MRHD.
Mutagenicity
Vortioxetine was not genotoxic in the
in vitrobacterial reverse mutation assay (Ames test), an
in vitrochromosome aberration assay in cultured human lymphocytes, and an
in vivorat bone marrow micronucleus assay.
Impairment of Fertility
Treatment of rats with vortioxetine at doses up to 120 mg/kg/day had no effect on male or female fertility, which is 58 times the maximum recommended human dose (MRHD) of 20 mg on a mg/m
2basis.
Adults (aged 18 years to 75 years)
The efficacy of TRINTELLIX in patients aged 18 years to 75 years was demonstrated in five, 6 to 8 week, placebo-controlled studies (Studies 1 to 5 in
Table 5). In these studies, patients were randomized to TRINTELLIX 5 mg, 10 mg, 15 mg or 20 mg or placebo once daily. For patients who were randomized to TRINTELLIX 15 mg/day or 20 mg/day, the final doses were titrated up from 10 mg/day after the first week.
The primary efficacy measures were the Hamilton Depression Scale (HAMD-24) total score in Study 2 and the Montgomery-Asberg Depression Rating Scale (MADRS) total score in all other studies. In each of these studies, at least one dose group of TRINTELLIX was superior to placebo in improvement of depressive symptoms as measured by mean change from baseline to endpoint visit on the primary efficacy measurement
(see
Table 5)
. Subgroup analysis by age, gender or race did not suggest any clear evidence of differential responsiveness. Two studies of the 5 mg dose in the U.S. (not represented in
Table 5) failed to show effectiveness.
Elderly Study (aged 64 years to 88 years)
The efficacy of TRINTELLIX for the treatment of MDD was also demonstrated in a randomized, double-blind, placebo-controlled, fixed-dose study of TRINTELLIX in elderly patients (aged 64 years to 88 years) with MDD (Study 6 in
Table 5). Patients meeting the diagnostic criteria for recurrent MDD with at least one previous major depressive episode before the age of 60 years and without comorbid cognitive impairment (Mini Mental State Examination score <24) received TRINTELLIX 5 mg or placebo.
Table 5: Primary Efficacy Results of 6 Week to 8 Week Clinical TrialsStudy No.
[Primary Measure]
| Treatment Group | Number of Patients | Mean Baseline Score (SD) | LS Mean Change from Baseline (SE) | Placebo-subtracted Difference
Difference (drug minus placebo) in least-squares mean change from baseline. (95% CI)
|
|---|
| SD: standard deviation; SE: standard error; LS Mean: least-squares mean; CI: unadjusted confidence interval. |
Study 1
[MADRS]
Non-US Study
| TRINTELLIX (5 mg/day)
| 108 | 34.1 (2.6) | -20.4 (1.0) | -5.9 (-8.6, -3.2) |
| TRINTELLIX (10 mg/day)
| 100 | 34.0 (2.8) | -20.2 (1.0) | -5.7 (-8.5, -2.9) |
| Placebo | 105 | 33.9 (2.7) | -14.5 (1.0) | -- |
Study 2
[HAMD-24]
Non-US Study
| TRINTELLIX (5 mg/day) | 139 | 32.2 (5.0) | -15.4 (0.7) | -4.1 (-6.2, -2.1) |
| TRINTELLIX (10 mg/day)
| 139 | 33.1 (4.8) | -16.2 (0.8) | -4.9 (-7.0, -2.9) |
| Placebo | 139 | 32.7 (4.4) | -11.3 (0.7) | -- |
Study 3
[MADRS]
Non-US Study
| TRINTELLIX (15 mg/day)
| 149 | 31.8 (3.4) | -17.2 (0.8) | -5.5 (-7.7, -3.4) |
| TRINTELLIX (20 mg/day)
| 151 | 31.2 (3.4) | -18.8 (0.8) | -7.1 (-9.2, -5.0) |
| Placebo | 158 | 31.5 (3.6) | -11.7 (0.8) | -- |
Study 4
[MADRS]
US Study
| TRINTELLIX (15 mg/day) | 145 | 31.9 (4.1) | -14.3 (0.9) | -1.5 (-3.9, 0.9) |
| TRINTELLIX (20 mg/day)
| 147 | 32.0 (4.4) | -15.6 (0.9) | -2.8 (-5.1, -0.4) |
| Placebo | 153 | 31.5 (4.2) | -12.8 (0.8) | -- |
Study 5
[MADRS]
US Study
| TRINTELLIX (10 mg/day) | 154 | 32.2 (4.5) | -13.0 (0.8) | -2.2 (-4.5, 0.1) |
| TRINTELLIX (20 mg/day)
| 148 | 32.5 (4.3) | -14.4 (0.9) | -3.6 (-5.9, -1.4) |
| Placebo | 155 | 32.0 (4.0) | -10.8 (0.8) | -- |
Study 6 (elderly)
[HAMD-24]
US and Non-US
| TRINTELLIX (5 mg/day)
| 155 | 29.2 (5.0) | -13.7 (0.7) | -3.3 (-5.3, -1.3) |
| Placebo | 145 | 29.4 (5.1) | -10.3 (0.8) | -- |
TRINTELLIX was superior to placebo on the Clinical Global Impression of Improvement (CGI-I) scale, which is a clinician's impression of how much the patient's clinical condition has improved or worsened relative to baseline on a scale of 1 (very much improved) to 7 (very much worse).
Time Course of Treatment Response
In the 6 to 8 week placebo-controlled studies, an effect of TRINTELLIX based on the primary efficacy measure was generally observed starting at Week 2 and increased in subsequent weeks with the full antidepressant effect of TRINTELLIX generally not seen until Study Week 4 or later.
Figure 4depicts time course of response in U.S. based on the primary efficacy measure (MADRS) in Study 5.
Figure 4. Change from Baseline in MADRS Total Score by Study Visit (Week) in Study 5
Figure 5. Difference from Placebo in Mean Change from Baseline in MADRS Total Score at Week 6 or Week 8
| †Results (point estimate and unadjusted 95% confidence interval) are from mixed model for repeated measures (MMRM) analysis. In Studies 1 and 6, the primary analysis was not based on MMRM and in Studies 2 and 6 the primary efficacy measure was not based on MADRS
|
|
Digit Symbol Substitution Test in Major Depressive Disorder
Two, eight week, randomized, double-blind, placebo-controlled studies were conducted to evaluate the effect of TRINTELLIX on the Digit Symbol Substitution Test (DSST) during the treatment of acute MDD. The DSST is a neuropsychological test that most specifically measures processing speed, an aspect of cognitive function that may be impaired in MDD. Patients are asked to match nine symbols with their corresponding number (1 to 9) according to a key; the score is the correct number of matches achieved in 90 seconds. For reference, the mean score for healthy 45 to 54 year-old subjects is 50 (SD=15).
Study 7 randomized adult patients meeting the diagnostic criteria for recurrent MDD to receive TRINTELLIX 10 mg, TRINTELLIX 20 mg, or placebo once daily. Study 8 randomized adult patients meeting the diagnostic criteria for recurrent MDD and reporting subjective difficulty concentrating or slow thinking to receive a flexible dose of TRINTELLIX (10 or 20 mg) or placebo once daily. Neither study included patients whose MDD was in remission yet who continued to experience difficulty concentrating or slow thinking. Patients' mean age was 46 (SD=12) and 45 (SD=12) in Study 7 and 8, respectively. In both studies, patients in the TRINTELLIX group had a statistically significantly greater improvement in number of correct responses on the DSST
(Table 6); depressed mood as assessed by change from baseline in MADRS total score also improved in both studies.
Table 6. Effect of TRINTELLIX on the Digit Symbol Substitution Test (DSST)| Study No. | Treatment Group | Number of Patients | Mean Baseline Score (SD) | LS Mean Change from Baseline (SE) | Placebo-subtracted Difference
Difference (drug minus placebo) in least-squares mean change from baseline. (95% CI)
|
|---|
| SD: standard deviation; SE: standard error; LS Mean: least-squares mean; CI: unadjusted confidence interval. |
| Study 7 | TRINTELLIX
(10 mg/day)
Doses are statistically significantly superior to placebo. | 193 | 42.0 (12.6) | 9.0 (0.6) | 4.2 (2.5, 5.9) |
TRINTELLIX
(20 mg/day)
| 204 | 41.6 (12.7) | 9.1 (0.6) | 4.3 (2.6, 5.9) |
| Placebo | 194 | 42.4 (13.8) | 4.8 (0.6) | -- |
| Study 8 | TRINTELLIX
(10/20 mg/day)
| 175 | 42.1 (11.9) | 4.6 (0.5) | 1.8 (0.3, 3.2) |
| Placebo | 167 | 43.0 (12.3) | 2.9 (0.5) | -- |
The effects observed on DSST may reflect improvement in depression. Comparative studies have not been conducted to demonstrate a therapeutic advantage over other antidepressants on the DSST.
Maintenance Studies
In a non-US maintenance study (Study 9 in
Figure 6), 639 patients meeting DSM-IV-TR criteria for MDD received flexible doses of TRINTELLIX (5 mg or 10 mg) once daily during an initial 12 week open-label treatment phase; the dose of TRINTELLIX was fixed during Weeks 8 to 12. Three hundred ninety six (396) patients who were in remission (MADRS total score ≤10 at both Weeks 10 and 12) after open-label treatment were randomly assigned to continuation of a fixed dose of TRINTELLIX at the final dose they responded to (about 75% of patients were on 10 mg/day) during the open-label phase or to placebo for 24 to 64 weeks. Approximately 61% of randomized patients satisfied remission criterion (MADRS total score ≤10) for at least four weeks (since Week 8), and 15% for at least eight weeks (since Week 4). Patients on TRINTELLIX experienced a statistically significantly longer time to have recurrence of depressive episodes than did patients on placebo. Recurrence of depressive episode was defined as a MADRS total score ≥22 or lack of efficacy as judged by the investigator.
Figure 6. Kaplan-Meier Estimates of Proportion of Patients with Recurrence (Study 9)
In a U.S.-based maintenance study (Study 10 in
Figure 7), 1,106 patients meeting DSM-IV-TR criteria for MDD were treated with a fixed dose of TRINTELLIX 10 mg once daily during an initial 16 week open-label treatment phase. Five hundred and eighty (580) patients who were in remission (MADRS total score ≤12 at both Weeks 14 and 16) after open-label treatment were randomized in a 1:1:1:1 ratio to TRINTELLIX 5 mg/day, 10 mg/day, 20 mg/day, or placebo daily for 32 weeks. The definition of recurrence of depressive episodes was the same as for Study 9. For all three doses of TRINTELLIX evaluated, patients treated with TRINTELLIX experienced a statistically significantly longer time to recurrence of depressive episodes than did patients treated with placebo.
Figure 7. Kaplan-Meier Estimates of Proportion of Patients with Recurrence (Study 10)
Prospective Evaluation of Treatment Emergent Sexual Dysfunction (TESD)
Two, randomized, double-blind, active-controlled studies were conducted to prospectively compare the incidence of TESD between TRINTELLIX and SSRIs via a validated self-rated measure of sexual function, the Changes in Sexual Functioning Questionnaire Short Form (CSFQ-14). The CSFQ-14 is designed to measure illness- and medication-related changes in sexual functioning that consists of 14 items measuring sexual functioning as a total score. The CSFQ-14 consists of subscales that assess the three phases of the sexual response cycle (desire, arousal, and orgasm). Higher scores on the CSFQ-14 indicate greater sexual function and for reference, a 2-3 point change is considered clinically meaningful.
Effect of Switching from SSRI to TRINTELLIX on TESD
The effect of TRINTELLIX on TESD induced by prior SSRI treatment in MDD patients whose depressive symptoms were adequately treated was evaluated in an eight-week, randomized, double-blind, active-controlled (escitalopram), flexible-dose study (Study 11). Patients taking citalopram, sertraline, or paroxetine for at least eight weeks duration and who were experiencing sexual dysfunction attributed to their SSRI treatment were switched to TRINTELLIX (n=217) or escitalopram (n=207). For both TRINTELLIX and escitalopram, patients were started on 10 mg, increased to 20 mg at Week 1, followed by flexible dosing. The majority of subjects received the 20 mg dose of TRINTELLIX (65.6%) or the 20 mg dose of escitalopram (71.9%) during the study.
Improvement in TESD induced by prior SSRI treatment in subjects switched to TRINTELLIX was superior to the improvement observed in those subjects who switched to escitalopram (2.2 point improvement vs escitalopram on the change from Baseline in CSFQ-14 total score, with 95% confidence interval 0.48 – 4.02), after eight weeks of treatment, while both drugs maintained the subjects' prior antidepressant response. For change from Baseline in CSFQ-14,
see
Figure 8.
Figure 8. Change from Baseline in CSFQ-14 Total Score by Study Visit (Week) in Study 11
Effects in Healthy Volunteers with Normal Sexual Functioning at Baseline
In a randomized Healthy Volunteer study (Study 12) with 348 subjects aged 18 years to 40 years with normal sexual functioning without the confounding effect of depression, TESD with TRINTELLIX 10 mg (n=85), but not with TRINTELLIX 20 mg (n=91), was statistically significantly less than with paroxetine 20 mg (n=83)
[see
Adverse Reactions (6.1)]
. Paroxetine 20 mg was statistically significantly worse than placebo (n=89), confirming assay sensitivity in this study. For change from Baseline in CSFQ-14,
see
Figure 9.
Figure 9. Change from Baseline in CSFQ-14 Total Score by Study Visit (Week) in Healthy Volunteers (Study 12)
Suicidal Thoughts and Behaviors
Advise patients and caregivers to look for the emergence of suicidal ideation and behavior, especially early during treatment and when the dose is adjusted up or down, and instruct them to report such symptoms to the healthcare provider
[see
Boxed Warning,
Warnings and Precautions (5.1)]
.
Concomitant Medication
Advise patients to inform their healthcare provider if they are taking, or plan to take, any prescription or over-the-counter medications because of a potential for interactions. Instruct patients not to take TRINTELLIX with an MAOI or within 14 days of stopping an MAOI and to allow 21 days after stopping TRINTELLIX before starting an MAOI
[see
Dosage and Administration (2.4),
Contraindications (4),
Warnings and Precautions (5.2),
Drug Interactions (7.1)]
.
Serotonin Syndrome
Caution patients about the risk of serotonin syndrome, particularly with the concomitant use of TRINTELLIX and triptans, tricyclic antidepressants, opioids, lithium, tryptophan supplements, busipirone, and St. John's Wort and with drugs that impair metabolism of serotonin (in particular, MAOIs, both those intended to treat psychiatric disorders and also others, such as linezolid)
[see
Warnings and Precautions (5.2),
Drug Interactions (7.1,
7.2)]
. Instruct patients to contact their health care provider or report to the emergency room if they experience signs or symptoms of serotonin syndrome.
Increased Risk of Bleeding
Inform patients about the concomitant use of TRINTELLIX with NSAIDs, aspirin, warfarin, or other drugs that affect coagulation because combined use has been associated with an increased risk of bleeding. Advise patients to inform their health care provider if they are taking or planning to take any prescription or over-the-counter medications that increase the risk of bleeding
[see
Warnings and Precautions (5.3)]
.
Activation of Mania/Hypomania
Advise patients and their caregivers to look for signs of activation of mania/hypomania
[see
Warnings and Precautions (5.4)]
.
Discontinuation of Treatment
Advise patients not to abruptly stop taking TRINTELLIX without first talking to their healthcare provider. Patients should be aware that discontinuation effects may occur when stopping TRINTELLIX and they should monitor for discontinuation symptoms
[see
Warnings and Precautions (5.5)and
Adverse Reactions (6.1)].
Angle Closure Glaucoma
Patients should be advised that taking TRINTELLIX can cause mild pupillary dilation, which in susceptible individuals, can lead to an episode of angle closure glaucoma. Pre-existing glaucoma is almost always open-angle glaucoma because angle closure glaucoma, when diagnosed, can be treated definitively with iridectomy. Open-angle glaucoma is not a risk factor for angle closure glaucoma. Patients may wish to be examined to determine whether they are susceptible to angle closure, and have a prophylactic procedure (e.g., iridectomy), if they are susceptible
[see
Warnings and Precautions (5.6)]
.
Hyponatremia
Advise patients that if they are treated with diuretics, or are otherwise volume depleted, or are elderly, they may be at greater risk of developing hyponatremia while taking TRINTELLIX
[see
Warnings and Precautions (5.7)]
.
Sexual Dysfunction
Advise patients that use of TRINTELLIX may cause symptoms of sexual dysfunction in both male and female patients. Inform patients that they should discuss any changes in sexual function and potential management strategies with their healthcare provider
[see
Warnings and Precautions (5.8)].
Nausea
Advise patients that nausea is one of the most common adverse reactions, and is dose related. Nausea commonly occurs within the first week of treatment, then decreases in frequency but can persist in some patients
[see
Adverse Reactions (6.1)]
.
Allergic Reactions
Advise patients to notify their healthcare provider if they develop an allergic reaction such as rash, hives, swelling, or difficulty breathing.
Pregnancy
Advise a pregnant woman or a woman planning to become pregnant that TRINTELLIX may cause withdrawal symptoms in the newborn or persistent pulmonary hypertension of the newborn (PPHN)
[see
Use in Specific Populations (8.1)]
. Advise the patients that there is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to TRINTELLIX during pregnancy
[see
Use in Specific Populations (8.1)]
.
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