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Novel pill shows promise in treating postpartum depression
One in eight women experience perinatal or postpartum depression, research suggests
A novel investigational postpartum depression pill has shown significant improvement in depressive symptoms in Phase 3 clinical trial.
The Feinstein Institutes for Medical Research at Northwell Health have announced the results from the SKYLARK Study, a phase 3 placebo-controlled clinical trial of an investigational oral, neuroactive steroid zuranolone pill in the treatment of postpartum depression, demonstrating the drug showed rapid, clinically meaningful improvements in depressive symptoms at measured time points.
This would support the potential for the US Food and Drug Administration (FDA) approval of the first oral, at-home, neuroactive steroid therapy to treat PPD.
Approximately one in eight women experience perinatal or postpartum depression (PPD) and current treatment options such as therapy can take months for new mothers to find symptom relief.
The trial, led by Dr Kristina M. Deligiannidis – professor at the Institute of Behavioral Science at the Feinstein Institutes – and published in The American Journal of Psychiatry, has shown a 14-day treatment with zuranolone versus placebo resulted in “significant” improvement in depressive symptoms.
At day 15, the study’s primary outcome measure, with statistically significant improvement in depressive symptoms, reported as early as day three and with improvements sustained at all measured time points through day 45.
Results showed that 57 per cent of the women taking zuranolone versus 38 per cent of women taking placebo experienced a 50 per cent or more improvement in their depressive symptoms at day 15.
At day 45, 61 per cent of the trial participants who received zuranolone compared to 54 per cent of women receiving placebo, experienced a 50 per cent or more improvement in their depressive symptoms.
“Postpartum depression is underrecognised, undertreated and disruptive for those who live with the condition, said” Dr. Deligiannidis, the trial’s principal investigator and lead author of the paper.

“We collaborate with researchers around the world in an effort to develop more rapid and effective therapies for the many women who need support.
“We have been working on neuroactive steroid research in PPD for nearly 15 years. The SKYLARK study follows previous successful clinical trials, and publishing its results is a pinnacle moment in treating postpartum depression.”
Among the 200 enrolled patients and randomised diverse patients screened across international clinical sites, 196 female patients between ages 18 to 45 with postpartum major depressive episodes received the blinded study drug.
Zuranolone (50mg) or placebo was given once daily for 14 days and the patient’s depressive symptoms were evaluated at several defined points in the study for 45 days.
In 2021, Dr Deligiannidis reported the publication of the phase 3 results of the ROBIN Study, which was published in the Journal of the American Medical Association (JAMA) Psychiatry.
The trial demonstrated the improvement in depressive symptoms with zuranolone at 30mg versus placebo in patients with PPD and that zuranolone was generally well tolerated.
Evidence suggests that PPD is partly due to a disruption in the normal interaction between the nervous system’s stress response, ɣ-aminobutyric acid (GABA) signalling, and neuroactive steroids (NAS).
The SKYLARK and ROBIN clinical trials, researchers say, could provide some of the most substantial results for improving depressive symptoms in women with PPD.
Dr Kevin Tracey, president and CEO of the Feinstein Institutes, said: “Dr Deligiannidis is a leader in postpartum depression medical research.
“These clinical trial results are evidence that years of perseverance and dedication lead to significant advances in medicine.”
Insight
Topical HRT protects bone density in women with period loss – study
Transdermal HRT best protects bone density in women with functional hypothalamic amenorrhoea, a condition that stops periods, a review of trials has found.
The meta-analysis pooled randomised clinical trials involving 692 participants and found transdermal hormone replacement therapy and teriparatide increased bone mineral density by between 2 and 13 per cent.
Functional hypothalamic amenorrhoea can follow anorexia or intense exercise. Bone mineral density measures bone strength and the amount of mineral in bone.
Around half of women with the condition have low bone mineral density, compared with about 1 per cent of healthy women, and their fracture risk is up to seven times higher.
The research was conducted by scientists at Imperial College London and Imperial College Healthcare NHS Trust.
Professor Alexander Comninos, senior author of the study and consultant endocrinologist at the trust, said: “Bone density is lost very rapidly in FHA and so addressing bone health early is very important to reduce the lifelong risk of fractures.
“Our study provides much needed comparisons of all the available treatments from all available studies.
“Clearly the best treatment is to restore normal menstrual cycles and therefore oestrogen levels through various psychological, nutritional or exercise interventions – but that is not always possible.
“The foundation for bone health is good calcium and vitamin D intake (through diet and/or supplements) but we have additional treatments that are more effective.”
When FHA is diagnosed, clinicians first try to restore periods through lifestyle measures, including psychological and dietary support, but these can fail. Guidelines then recommend giving oestrogen, though the best form was unclear.
The team reviewed all prior randomised trials comparing therapies, including oral and transdermal oestrogen, and also assessed teriparatide, a prescription bone-building drug used for severe osteoporosis.
They found no significant benefit for oral contraceptive pills or oral hormone therapy.
A recent UK audit reported that about a quarter of women with anorexia-related FHA are prescribed the oral contraceptive pill for bone loss; the study suggests using transdermal therapy instead.
Comninos said: “Our goal is simple: to help women receive the right treatment sooner and to protect their bone health in the long-term.
“We hope this study provides clinicians with better evidence to choose transdermal oestrogen when prescribing oestrogen and so inform future practice guidelines.
“Right now, millions of women with FHA may not be receiving the best treatments for their bone health.”
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