Why does one patient respond to FSH while another needs LH? How do receptor polymorphisms shape stimulation outcomes? When should you switch from a standard protocol to a random start? Nine lectures by leading Ukrainian reproductologists — from LH physiology and genetics to trigger selection, PCOS management, and pharmacoeconomics — followed by two live panel discussions with audience Q&A. Practical insights you can apply in your next cycle.
The Winter School of Reproductive Medicine is an annual conference organised by SONA PHARM and SONA Academy, bringing together leading Ukrainian specialists in reproductive medicine. The 2026 edition — held on 3 April in Berehove, Zakarpattia — focused on luteinising hormone (LH) as a pivotal factor in ART success, under the theme «LH as the Key to ART Success: New Horizons of Personalisation». Section 1, «Key Mechanisms of LH Physiology», explored the fundamental science of LH. Kseniia Khazhylenko (Acad. V.I. Gryshchenko Clinic «RID») opened with LH receptor signalling. Nataliia Vladykina (LITA) showed how FSH/LH receptor polymorphisms and genes such as WEE2, ZP1–3, and LHCGR predict ovarian response. Nataliia Dankovych (Medical Plaza) addressed the role of LH in PCOS pathogenesis and treatment. The section concluded with a live Q&A moderated by Professor Mykola Gryshchenko. Section 2, «LH Deficiency in Reproduction», focused on clinical protocols. Myroslava Vatsyk («Mother and Child» MC) analysed LH deficiency in women of advanced reproductive age. Olha Romanova (REPROLIFE) presented random-start protocols for urgent and oncofertility cases. Halyna Strelko (IVMED) reviewed trigger selection and oocyte quality. Vitaliy Radko («Mother and Child» MC) shared clinical riddles where LH proved indispensable. A live Q&A followed, moderated by UARM President Professor Olexandr Yuzko. Section 3, «Individualised Approach to Stimulation», concluded the programme. Volodymyr Kotlik («Mother and Child» MC) examined the role of LH in frozen embryo transfer protocols. Mykola Gryshchenko (SONA Academy) closed with a pharmacoeconomic analysis of ovulation stimulation.
Apply the two-cell two-gonadotrophin model when choosing FSH-only vs LH-supplemented stimulation protocols.
Identify candidates for LHCGR/FSHR genotyping and adjust the protocol based on receptor polymorphism profile.
Implement the 2023 international PCOS guideline and revised Rotterdam criteria when planning stimulation in LH-driven PCOS.
Address relative LH deficiency in patients 38+ when standard FSH-only protocols underperform on oocyte maturation.
Differentiate HCG, agonist, dual and double trigger strategies based on protocol type, patient profile and Vienna consensus yield ratio.
Evaluate cost vs cumulative live birth tradeoffs when planning stimulation, with NHSU and out-of-pocket realities in mind.
Why does the Winter School open in spring? A short opening on what makes LH the through-line of the 2026 programme — from receptor biology to pharmacoeconomics — and a quick framing of the day's three sections.
Are antral follicles really gonadotrophin-dependent only at one stage — or all the way through? A walk through the LH receptor, the two-cell two-gonadotrophin model and what the 2023 reframing of folliculogenesis means for choosing a stimulation protocol.

Why does one patient respond to FSH alone while another stalls without LH? Polymorphisms of FSHR, LHCGR and ESR — what genetic markers explain stimulation failures, and where genotyping starts paying off in routine practice.

PCOS affects 8-13% of women of reproductive age and drives 70% of anovulatory infertility. A look at the role of elevated LH in PCOS pathogenesis, the 2023 international guideline, the revised Rotterdam criteria — and what a personalised stimulation pathway looks like in 2026.

Open Q&A after Section 1. Live exchange on PGD funding under NHSU, how to apply LHCGR genotyping in real cycles, the role of LH in PCOS protocols and where current Order 787 indications break against modern practice.



An 18-oocyte cycle at 40 with a poor maturation rate is no longer surprising. Why advanced reproductive age is not only quantity but quality, what relative LH deficiency does to oocyte competence, and how to read the LH:FSH ratio when planning a stimulation in the over-38 patient.

A 35-year-old with normal AMH, normal FSH/LH and 4 years of unexplained infertility. Triple trigger, 19 oocytes retrieved — and 79% immaturity. The talk uses real cases to walk through random-start, DuoStim and the role of LH supplementation when standard stimulation hits a wall.

The trigger is one small injection at the end of stimulation — and most of the cycle outcome rides on it. A practical walk through trigger choice (HCG, agonist, dual, double), the Vienna consensus 80-95% oocyte yield ratio, and what each trigger does to oocyte maturation in real protocols.

Three buckets of patients: those where LH is non-negotiable, those where it almost is, and those where you can manage without. The talk classifies clinical scenarios — hypogonadotrophic hypogonadism, LH receptor polymorphisms, advanced reproductive age — and gives a decision tree for when recombinant LH actually changes the cycle outcome.

Open Q&A after Section 2. Live discussion on antagonist use in random-start with a residual corpus luteum, progesterone monitoring in DuoStim, trigger choice for the dual-stim cycle, and where recombinant LH adds measurable value beyond protocol convention.



Why does the corpus luteum still matter when we transfer in HRT? A walk through 40+ years of LH-progesterone evidence, three studies (two fundamental, one practical) on luteal-phase support, and where the 22+ existing FET protocols separate into corpus-luteum-supported and corpus-luteum-free strategies.

We can save money anywhere in an IVF cycle — the real question is what we pay for that. A frank look at the cost structure of stimulation, the low-cost-airline analogy, NHSU reimbursement realities and how to find a defensible balance between price and result without compromising live-birth rate.

Educational use only. This program is provided by Sona Academy for educational and informational purposes for healthcare professionals and students only. It is not intended for patients or the general public, is not a substitute for professional medical advice, diagnosis or treatment, and is not intended to promote the use of any products.
Funding & editorial independence. The sponsor does not participate in or influence the selection, development or content of the program. The content is developed by the speaker, and the opinions expressed are the speaker's and do not necessarily reflect those of Sona Academy or the sponsor.
Jurisdictional differences. Laws, regulations and ethical standards governing medical practice vary by country, and not all methods or techniques presented may be permissible in every jurisdiction. Users are responsible for ensuring compliance with all laws, regulations, licensing requirements and professional standards applicable in their jurisdiction.
The speakers have declared no relevant conflicts of interest in relation to this presentation.


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