The following selected adverse reactions occurred in <2% of patients receiving VIVJOA in Trial 1, Trial 2 and Trial 3:
- Laboratory investigations: Increased blood creatine phosphokinase
- Gastrointestinal disorders: Dyspepsia
- Vascular disorders: Hot flush
- Renal and urinary disorders: Dysuria
- Reproductive system and breast disorders: Menorrhagia (includes genital hemorrhage, menorrhagia; menometrorrhagia; uterine hemorrhage, vaginal hemorrhage) metrorrhagia; vulvovaginal irritation (includes vulvovaginal burning sensation, vulvovaginal discomfort, and vulvovaginal pain)
Laboratory Findings
Elevations in Creatine Phosphokinase
Serum creatine phosphokinase (CPK) (an indirect marker of muscle injury/necrosis) elevations greater than or equal to 10 times the upper limit of normal were observed in 11 (1.9%) patients treated with VIVJOA versus 2 (0.7%) patients in the comparator groups during the VIVJOA clinical trials. The elevations were transient.
BCRP (Breast Cancer Resistance Protein) Transporter Substrates
Oteseconazole is a BCRP inhibitor. Concomitant use of VIVJOA with BCRP substrates (e.g., rosuvastatin) may increase the exposure of BCRP substrates (e.g., rosuvastatin), which may increase the risk of adverse reactions associated with these drugs. Use the lowest possible starting dose of the BCRP substrate or consider reducing the dose of the substrate drug and monitor for adverse reactions
[see
Clinical Pharmacology (12.3)]
.
Risk Summary
VIVJOA is contraindicated in females of reproductive potential and in pregnant women. Based on animal studies, VIVJOA may cause fetal harm when administered to pregnant women. In addition, the drug exposure window of approximately 690 days (based on 5 times the half-life of oteseconazole) precludes adequate mitigation of the embryo-fetal toxicity risks
[see
Warnings and Precautions (5.1) and
Clinical Pharmacology (12.3)].
Ocular abnormalities were observed in a pre and postnatal animal study in the offspring of rats administered oteseconazole from Gestation Day 6 through Lactation Day 20 at doses about 3.5 times the recommended human dose based on AUC comparisons (see
Data). The observed ocular abnormalities included cataracts, opacities, exophthalmos/buphthalmos, optic nerve/retinal atrophy, lens degeneration and hemorrhage.
There are limited human data in pregnant women who were exposed to VIVJOA during the clinical trials; these data are insufficient to exclude a potential risk of cataracts or other eye abnormalities in human infants.
Data
Animal Data
Rat and rabbit embryofetal development was assessed after oral administration of oteseconazole. There was no embryofetal toxicity or malformations at 40 mg/kg/day following administration of oteseconazole during organogenesis in pregnant rats at doses about 10 times the maximum human exposure for RVVC based on AUC comparisons. Abortions occurred in rabbits in the presence of maternal toxicity (reduced bodyweight gain with reduced food consumption) but there were no malformations at 15 mg/kg/day following administration of oteseconazole during organogenesis in pregnant rabbits about 6 times the maximum human exposure for RVVC based on AUC comparisons.
Ocular abnormalities including cataracts, opacities, exophthalmos/buphthalmos, optic nerve/retinal atrophy, lens degeneration and hemorrhage were observed in the offspring of rats administered oteseconazole from Gestation Day 6 through Lactation Day 20 at 7.5 mg/kg day (about 3.5 times the recommended human dose based on AUC comparisons). There were no effects on pregnancy or parturition in these pre and postnatal studies at any dose.
Risk Summary
VIVJOA is contraindicated in lactating women and females of reproductive potential. There are no data on the presence of oteseconazole in human or animal milk or data on the effects of oteseconazole on milk production. There were no reported adverse effects in breastfed infants following maternal exposure to oteseconazole during lactation; however, given the limited duration of follow-up of the oteseconazole-exposed infants during the post-natal period, no conclusions can be drawn from these data
[see
Warnings and Precautions (5.1)]
.
Ocular abnormalities were observed in a pre and postnatal study in the offspring of rats administered oteseconazole from Gestation Day 6 through Lactation Day 20 at doses approximately 3.5 times the recommended human dose based on AUC comparisons
[see
Use in Specific Populations (8.1)].
The relationship between the observed animal findings and breastfed infants is unknown.
Cardiac Electrophysiology
At 5 times the maximum exposures for the recommended dose, VIVJOA does not prolong the QT interval to any clinically relevant extent.
Absorption
The time to peak plasma concentrations of oteseconazole was approximately 5 to 10 hours.
Effect of Food
Administration of VIVJOA with a high-fat, high-calorie meal (800-1000 Calories; 50% fat) increased C
max and AUC
0-72h by 45% and 36%, but no significant differences were observed with a low-fat, low-calorie meal.
Distribution
The central volume of distribution of oteseconazole is approximately 423 L. Oteseconazole is 99.5-99.7% bound to plasma proteins. Animal studies indicated that oteseconazole exposures in vaginal tissue are comparable to plasma exposures.
Elimination
The median terminal half-life of oteseconazole is approximately 138 days.
Metabolism
Oteseconazole does not undergo significant metabolism.
Excretion
Following oral administration of radiolabeled oteseconazole, approximately 56% of the radiolabeled dose was recovered in feces primarily through biliary excretion and 26% was recovered in urine.
Specific Populations
There were no clinically significant differences in the pharmacokinetics of oteseconazole based on sex, race/ethnicity or mild to moderate renal impairment.
Drug Interaction Studies
BCRP substrates: Oteseconazole increased the C
max and AUC
0-24h of rosuvastatin, a BCRP substrate, by 118% and 114%, respectively
.
Other Drugs: No clinically significant differences in the pharmacokinetics of the following drugs were observed when co-administered with oteseconazole: Midazolam (sensitive CYP3A4 substrate), ethinyl estradiol (CYP3A4 substrate), norethindrone (CYP3A4 substrate), or digoxin (P-gp substrate).
Mechanism of Action:
Oteseconazole is an azole metalloenzyme inhibitor targeting the fungal sterol, 14α demethylase (CYP51), an enzyme that catalyzes an early step in the biosynthetic pathway of ergosterol, a sterol required for fungal cell membrane formation and integrity. Inhibition of CYP51 results in the accumulation of 14-methylated sterols, some of which are toxic to fungi. Through the inclusion of a tetrazole metal-binding group, oteseconazole has a lower affinity for human CYP enzymes.
Resistance:
The potential for increases in minimum inhibitory concentrations (MIC) to oteseconazole has been evaluated
in vitro including specific mechanisms of resistance
. Increases in oteseconazole MIC were associated with upregulation of the efflux pumps CDR1, MDR1, and the azole target, lanosterol 14-alpha-demethylase (CYP51). Against certain
Candida spp. oteseconazole maintained meaningful
in vitro activity against clinical isolates that were resistant to fluconazole.
Antimicrobial Activity:
The following
in vitro data is available, but their clinical significance is unknown. Oteseconazole has been shown to be active against most isolates of the following microorganisms associated with RVVC
[see
Indications and Usage (1.1)]
:
- Candida albicans
- Candida glabrata
- Candida krusei
- Candida parapsilosis
- Candida tropicalis
- Candida lusitaniae
- Candida dubliniensis
Carcinogenesis
There was no increase in the incidence of tumors following daily oral administration of oteseconazole to Tg.rasH2 mice for 6 months at doses of 5 mg/kg/day (males) and 15 mg/kg/day (females), which are up to 3 and 10 times, respectively, the maximum human exposure for RVVC based on AUC comparisons.
In an oral carcinogenicity study, Sprague Dawley rats were administered doses of 0.5, 1.5, or 5 mg/kg/day oteseconazole once daily for up to 90 weeks. The high dose was initially reduced from 5 to 3 mg/kg/day due to excess mortality in males and reduced body weight in females. In males, an increase in the incidence in Leydig cell adenomas of the testes and thyroid follicular cell adenomas/carcinomas (combined) were increased at ≥1.5 mg/kg/day (similar to the maximum human exposure for RVVC based on AUC comparisons). In females, thyroid follicular cell adenomas and carcinomas (combined) were increased at ≥1.5 mg/kg/day (similar to the maximum human exposure for RVVC based on AUC comparisons) and thyroid carcinomas were increased at 5 to 3 mg/kg/day (5 times the maximum human exposure for RVVC based on AUC comparisons). The Leydig and thyroid findings are of uncertain relevance to humans.
Mutagenesis
Oteseconazole was negative in the bacterial reverse mutation assay,
in vitro chromosomal aberration assay and micronucleus assay in rats.
Impairment of Fertility
Male rats were administered daily oral doses of 0, 0.5, 3, or 10 mg/kg/day oteseconazole beginning 42 days prior to pairing with untreated females, through the mating and post-mating period until euthanasia on Day 76 of treatment followed by a 12-week recovery period. There were no effects on reproductive and/or fertility parameters at the time of mating at 10 mg/kg/day (7 times the maximum human exposure for RVVC based on AUC comparisons). Increased incidences of abnormal sperm were observed at 3 mg/kg/day and sperm counts were reduced at 10 mg/kg/day. Although fertility was unaffected, sperm concentration remained reduced at the end of the recovery period.
Female rats were administered daily oral doses of 0, 1.5, 5, or 25 mg/kg/day oteseconazole beginning 28 days prior to cohabitation with untreated males, continuing throughout mating and through gestational day 7. Although there were no effects on estrous cyclicity, effects on reproductive and fertility parameters were observed at 25 mg/kg/day in the presence of maternal toxicity (11 times the maximum human exposure for RVVC based on AUC comparisons).
Overview of the Clinical Studies
A total of 656 adults and post-menarchal pediatric females with RVVC (defined as ≥3 episodes of vulvovaginal candidiasis (VVC) in a 12-month period) were randomized in two multicenter, multinational, double-blind, placebo-controlled trials: Trial 1 (NCT#03562156) and Trial 2 (NCT#03561701). A total of 219 adults and post-menarchal pediatric females with RVVC were randomized in a multicenter, double-blind trial [Trial 3 (NCT#03840616)]. Although females of reproductive potential were included in the clinical efficacy data, VIVJOA is contraindicated in females of reproductive potential due to the risk of embryo-fetal toxicity
[see
Contraindications (4),
Warnings and Precautions (5.1) and
Use in Specific Populations (8.1,
8.3,
8.4)]
.
Trial 1 and Trial 2
Trial 1 and Trial 2 were both randomized, placebo-controlled trials evaluating the efficacy and safety of VIVJOA in the reduction of RVVC. Both trials consisted of two phases: an open-label induction phase and an 11-week maintenance phase. Patients received three sequential doses of 150 mg of fluconazole (every 72 hours) on Days, 1, 4 and 7 during the induction phase. Patients returned 14 days after the first dose of fluconazole and if the acute VVC episode was resolved (vulvovaginal signs and symptoms score < 3) they were randomized (2:1) to receive either 150 mg of VIVJOA or placebo for 7 days followed by 11 weekly doses in the maintenance phase.
In Trial 1, a total of 483 patients were enrolled in the induction phase with 326 patients entering the maintenance phase with 217 patients randomized to VIVJOA and 109 patients randomized to placebo. A total of 182 patients (84%) in the VIVJOA group and 91 patients (83%) in the placebo group completed the trial. The mean age of patients was 34 years old (range 17-78 years old) with 85% of patients aged 18-44 years and 15% of patients aged 45 years and older. Patients were 72% White, 13% Black or African American, 14% Asian, and 8% were of Hispanic or Latino ethnicity.
In Trial 2, a total of 425 patients were enrolled into the induction phase with 330 patients entering the maintenance phase with 220 subjects randomized to VIVJOA and 110 patients randomized to placebo. A total of 191 patients (87%) in the VIVJOA group and 91 patients (83%) in the placebo group completed the trial. The mean age of patients was 34 years old (range 18-73 years old) with 85% of patients aged 18-44 years and 15% of patients aged 45 years and older. Patients were 89% White, 10% Black or African American and 15% were of Hispanic or Latino ethnicity.
For both Trial 1 and Trial 2, efficacy was assessed by the proportion of patients with ≥1 culture-verified acute VVC episode (positive fungal culture for
Candida species associated with a clinical signs and symptoms score of ≥3) during the Maintenance Phase through Week 48. Evaluation of clinical signs and symptoms included erythema (redness), edema (swelling), excoriation (skin picking), itching, burning and irritation. Since treatment for acute VVC was allowed to be provided to a patient if it was deemed to be clinically needed when the patient had a signs and symptoms score ≥ 3 and a positive KOH test, the proportion of patients with ≥1 culture-verified acute VVC episode or who took medication known to treat VVC during the Maintenance Phase through Week 48 is also presented.
VIVJOA was superior to placebo with reference to the proportion of patients with ≥1 culture-verified acute VVC episode through Week 48 (Table 2) or the proportion of patients with ≥1 culture-verified acute VVC episode or who took medication known to treat VVC during the Maintenance Phase through Week 48. For both Trial 1 and Trial 2, the average percentage of patients was lower in the VIVJOA groups compared with the placebo group (Table 2).
Table 2: Trial 1 and 2 Efficacy Endpoints: ITT Population | Trial 1 | Trial 2 |
|---|
| VIVJOA
(N=217)
| Placebo
(N=109)
| VIVJOA
(N=218)
| Placebo
(N=108)
|
|---|
| Abbreviations: ITT=Intent-to-Treat (Population); VVC=vulvovaginal candidiasis. |
| Proportion of Patients with ≥1 Culture-verified Acute VVC Episode (Day 1 through Week 48)
Average %. Missing values were imputed with multiple imputation using the following auxiliary information: region, treatment, Baseline body mass index, Baseline age, ethnicity, and visit. | 6.7% | 42.8% | 3.9% | 39.4% |
| Treatment Difference p-value
The p-value was obtained using a Chi-square test comparing VIVJOA with placebo. | <0.001 | <0.001 |
| Proportion of Patients with ≥1 Culture-verified Acute VVC Episode or received VVC medication (Day 1 through Week 48)
| 27.3% | 50.8% | 21.3% | 49.7% |
| Treatment Difference p-value
| <0.001 | <0.001 |
Trial 3
Trial 3 was a randomized, double-blind trial evaluating the efficacy and safety of VIVJOA versus fluconazole and placebo in adults and post-menarchal pediatric females with RVVC. The trial consisted of two phases: induction and maintenance.
During the induction phase, patients received 1050 mg of VIVJOA over two days (600 mg [4×150mg] on Day 1 and 450 mg [3×150mg] on Day 2) or three sequential doses of 150 mg of fluconazole (every 72 hours) on Days, 1, 4 and 7. Patients returned 14 days after the first dose and moved to the maintenance phase if the acute VVC episode was resolved. During the maintenance phase, patients received 150 mg VIVJOA weekly or placebo weekly for 11 weeks.
A total of 219 patients were randomized (2:1) into the induction phase: 147 to VIVJOA and 72 to fluconazole/placebo. One patient in the VIVJOA group did not receive drug therefore 146 patients received VIVJOA. A total of 112 patients (76%) in the VIVJOA group and 55 patients (76%) in the fluconazole/placebo group completed the trial.
The mean age of patients was 35 years (range 16-78) with 80% of patients aged 18-44 years and 19% of patients aged 45 years and older. Patients were 59% White, 34% Black or African American, 1% Asian and 26% were of Hispanic or Latino ethnicity. The trial was conducted completely in the United States.
Efficacy was assessed by the proportion of patients with ≥1 culture verified acute VVC episode during the maintenance phase (post-randomization through Week 50) or who failed clearing their infection during the induction phase. A recurring acute VVC episode was defined as a positive culture for
Candida species and a clinical signs and symptoms score of ≥3. Evaluation of clinical signs and symptoms included erythema(redness), edema (swelling), excoriation (skin picking), itching, burning and irritation. Additionally, the proportion of patients with ≥1 culture verified acute VVC episode or who took medication known to treat VVC during the maintenance phase (post-randomization through Week 50) or who failed clearing their infection during the induction phase is presented.
VIVJOA was superior to fluconazole/placebo in the proportion of patients with ≥1 culture-verified recurring acute VVC episode during the maintenance phase (post randomization through Week 50) or failed clearing their infection during the induction phase and the proportion of patients with ≥1 culture-verified recurring acute VVC episode or took VVC medication known to treat VVC during the maintenance phase (post randomization through Week 50) or who failed clearing their infection during the induction phase. The average percentage of patients was lower in the VIVJOA group compared with the fluconazole/placebo group (Table 3).
Table 3: Trial 3 Efficacy Endpoints ITT population | VIVJOA
(N=147)
| Fluconazole/Placebo
(N=72)
| Treatment Difference p-value
The p-value was obtained using a Chi-square test comparing VIVJOA with fluconazole/placebo. |
|---|
| Abbreviations: ITT=Intent-to-Treat (Population); VVC=vulvovaginal candidiasis |
| Proportion of Patients with ≥1 Culture-verified Acute VVC Episode through Week 50 or Unresolved VVC Episode During the Induction Phase
Average %, Missing values were imputed with multiple imputation using the following auxiliary information: treatment, baseline body mass index, baseline age, ethnicity, and visit. | 10.3% | 42.9% | <0.001 |
| Proportion of Patients with ≥1 Culture-verified Acute VVC Episode or took VVC medication through Week 50 or Unresolved VVC Episode During the Induction Phase
| 43.5% | 59.0% | 0.039 |
Embryo-Fetal Toxicity
Advise patients that VIVJOA is contraindicated in females of reproductive potential and in pregnant women because it may cause fetal harm
[see
Contraindications (4),
Warnings and Precautions (5.1) and
Use in Specific Populations (8.1,
8.3)]
.
Lactation
Advise patients that VIVJOA is contraindicated in lactating women because it may cause harm to the breastfed infant
[see
Contraindications (4),
Warnings and Precautions (5.1) and
Use in Specific Populations (8.2)].
Important Administration Instructions
Advise patients that VIVJOA must be taken with food, and that capsules must be swallowed whole and not chewed, crushed, dissolved, or opened
[see
Dosage and Administration (2.1)].
Concomitant Administration with BCRP Transporter Substrates
Advise patients to inform their health care provider if they are taking a BCRP substrate (e.g., rosuvastatin). Concomitant use with VIVJOA may increase the exposure of drugs that are BCRP substrates, which may increase the risk of adverse reactions associated with these drugs
[see
Drug Interactions (7.1)]
.
Manufactured for and distributed by:
Mycovia Pharmaceuticals, Inc.
Durham, NC 27703
Patent numbers: 8,236,962, 8,754,227,10,173,998,10,464,921,10,836,740, 9,840,492,10,414,751