Dapivirine Ring Previous Safety Experience
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Transcript of Dapivirine Ring Previous Safety Experience
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Dapivirine RingPrevious Safety ExperienceMTN 020 Training
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What do we know? Side effects Pregnancy Resistance
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Same rate as no ring groups in previous studies
Metrorrhagia is common
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Pregnancy In rats, some effects on the developing fetus were observed
following oral administration at maternally toxic doses (80 mg/kg and 320 mg/kg) of dapivirine
No effects in rats at the maternally non-toxic dose of 20 mg/kg/day, or in rabbits at up to 90 mg/kg.
Insufficient information is currently available on dapivirine administration in pregnant women
Measures should be taken to avoid dapivirine exposure in women of childbearing potential or during pregnancy
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Resistance In vitro studies of dapivirine have shown that NNRTI
resistance mutants can develop when virus is cultured in the setting of low concentrations of dapivirine
Major mutations for resistance are Y181C, K103N, L100I and E138K
Clinical significance of these in vitro studies not known
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Conclusions Safety:
To date, ring is safe and well tolerated No treatment-related SAEs Related AEs were similar in dapivirine and placebo
rings groups in IPM studies, and consistent with background rates in the general population.
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Acknowledgements
IPM colleagues
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Questions?