ABSTRACT
OBJECTIVE: To assess the efficacy of topical sildenafil cream, 3.6% among healthy premenopausal women with female sexual arousal disorder. METHODS: We conducted a phase 2b, exploratory, randomized, placebo-controlled, double-blind study of sildenafil cream. Coprimary efficacy endpoints were the change from baseline to week 12 in the Arousal Sensation domain of the SFQ28 (Sexual Function Questionnaire) and question 14 of the FSDS-DAO (Female Sexual Distress Scale-Desire, Arousal, Orgasm). RESULTS: Two hundred women with female sexual arousal disorder were randomized to sildenafil cream (n=101) or placebo cream (n=99). A total of 174 participants completed the study (sildenafil 90, placebo 84). Among the intention-to-treat (ITT) population, which included women with only female sexual arousal disorder and those with female sexual arousal disorder with concomitant sexual dysfunction diagnoses or genital pain, although the sildenafil cream group demonstrated greater improvement in the SFQ28 Arousal Sensation domain scores, there were no statistically significant differences between sildenafil and placebo cream users in the coprimary and secondary efficacy endpoints. An exploratory post hoc subset of the ITT population with an enrollment diagnosis of female sexual arousal disorder with or without concomitant decreased desire randomized to sildenafil cream reported significant increases in their SFQ28 Arousal Sensation domain score (least squares mean 2.03 [SE 0.62]) compared with placebo cream (least squares mean 0.08 [SE 0.71], P=.04). This subset achieved a larger mean improvement in the SFQ28 Desire and Orgasm domain scores. This subset population also had significantly reduced sexual distress and interpersonal difficulties with sildenafil cream use as measured by FSDS-DAO questions 3, 5, and 10 (all P≤.04). CONCLUSION: Topical sildenafil cream improved outcomes among women with female sexual arousal disorder, most significantly in those who did not have concomitant orgasmic dysfunction. In particular, in an exploratory analysis of a subset of women with female sexual arousal disorder with or without concomitant decreased desire, topical sildenafil cream increased sexual arousal sensation, desire, and orgasm and reduced sexual distress. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov, NCT04948151.
ABSTRACT
BACKGROUND: Approximately 26% of adult women in the United States suffer from female sexual arousal disorder (FSAD), yet little has been done to compare the experience of FSAD in pre- and postmenopausal women, which is critical to enhance the current understanding of FSAD and inform the development and assessment of treatment options for these patient populations. AIM: To explore the experience of condition-associated symptoms and the relative importance of FSAD symptoms, including their severity, bother, and impact, on participants' health-related quality of life (HRQoL) in pre- and postmenopausal women with FSAD. METHODS: In-depth, qualitative, semistructured concept elicitation interviews were conducted with premenopausal (n = 23) and postmenopausal (n = 13) women who were clinically diagnosed with FSAD by a trained sexual medicine clinician. All interviews were audio recorded and transcribed verbatim by a professional transcription company. Thematic analysis was performed with the assistance of NVivo qualitative analysis software. OUTCOMES: Outcomes included qualitative interview data about FSAD symptoms and HRQoL, as well as a comparison between pre- and postmenopausal populations. RESULTS: The most frequently reported symptom in both cohorts was "inability or difficulty with orgasm" (premenopausal, n = 21; postmenopausal, n = 13). The symptom that premenopausal women most desired to have treated was lubrication, and for postmenopausal women, it was a lack of lubrication or wetness and loss of feeling/sensation. In total, 21 of 23 premenopausal women and all 13 postmenopausal women reported a lack of feeling or sensation in the genitals. The most frequently reported HRQoL impact in both groups was decreased confidence. CLINICAL IMPLICATIONS: Results from this study suggest that the manifestation and experience of FSAD are similar in pre- and postmenopausal women and that the unmet need for an FSAD treatment in the postmenopausal population is just as great as that of the premenopausal population. STRENGTHS AND LIMITATIONS: This study involved in-depth qualitative interviews with a relatively small group of women (N = 36) recruited from only 5 study sites across the United States. CONCLUSION: The analysis of qualitative data from the concept elicitation interviews revealed a substantial physical and emotional burden of FSAD, underscoring the need for Food and Drug Administration-approved treatment options for pre- and postmenopausal women with FSAD.
