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O&G VivasReproductive endocrinology & infertility

O&G Vivas · Reproductive endocrinology & infertility

Fertility preservation — structured oral station (12 minutes)

FRANZCOG oral-format station on oncofertility in ER-positive breast cancer: candidate runs the urgent pathway, defends the letrozole 5 mg protocol with safety evidence, chooses oocyte cryopreservation for a single woman, places the GnRH agonist correctly as an adjunct, and counsels honestly. Scored against the eight published RANZCOG oral domains.

clinical3 min readVerification in progress

Target exams

FRANZCOGMRCOGABOG
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Target exams

FRANZCOGMRCOGABOG
Prompt
You are the reproductive medicine registrar. A 28-year-old nulliparous woman with a new diagnosis of oestrogen-receptor-positive breast cancer has been referred by her oncologist. Chemotherapy containing cyclophosphamide is planned to start in two weeks. She has no partner and is distressed about losing her fertility. AMH 2.4 ng/mL, antral follicle count 10. The examiner will ask you to manage the oncofertility pathway, defend your stimulation protocol and its safety, and communicate with the patient.

Station format

4 minutes reading, 12 minutes examination, 20 marks, global scoring. The eight published RANZCOG oral domains apply to every station: history and examination; investigations and interpreting results; treatment and management; clinical knowledge; complex, urgent or unusual clinical presentations; rapport with patient, support person or colleague; respect; communication skills. You are being marked on how you behave, not only what you know.[1]

Reveal the examiner script and model responsesShowHide

Opening prompt — "Tell me how you approach this referral."

Model response — say it in this order: [2]

  • "This is an urgent oncofertility referral. ASCO requires that the fertility discussion be initiated and documented as early as possible, in parallel with staging, so I would see her today, confirm the oncology timeline, and run a multidisciplinary discussion with oncology, reproductive medicine and psychology."
  • "With two weeks available and a reasonable AMH and antral follicle count, she is a candidate for oocyte cryopreservation — she has no partner, so embryo cryopreservation would require a donor-sperm decision that she has not made."
  • "Because her cancer is oestrogen-receptor-positive, I would use a GnRH antagonist backbone with letrozole 5 mg daily co-stimulation and a GnRH agonist trigger, and complete the cycle so chemotherapy proceeds on schedule."[2][4]

Examiner is listening for: the documented-discussion requirement, parallel multidisciplinary work, strategy choice driven by partner status and receptor status, and the named protocol. [2]

Probe 1 — "Why letrozole, and is it safe?"

  • "In ER-positive disease, standard stimulation drives a supraphysiological oestradiol that is a concern. Oktay's 2005 prospective study established letrozole 5 mg daily with FSH, which lowered peak oestradiol while maintaining embryo yield."[4]
  • "The Kim, Turan and Oktay long-term safety study, with a mean five-year follow-up, found a recurrence hazard ratio of 0.77, 95 per cent confidence interval 0.28 to 2.13, with survival not compromised. They concluded the protocol is unlikely to cause a substantially increased recurrence risk."[3]

Probe 2 — "Can you start stimulation today, regardless of her cycle day?"

  • "Yes. The von Wolff analysis of 684 stimulations across the FertiPROTEKT network showed the outcome of stimulation is similar after initiation during any phase of the menstrual cycle, supporting random-start before gonadotoxic therapy. The luteal start did not compromise oocyte yield."[6]

Probe 3 — "Her oncologist asks whether a GnRH agonist injection would be enough on its own. What do you say?"

  • "No. ASCO is explicit that a GnRH agonist must not be used in place of proven fertility preservation methods — it does not store gametes. It can be offered as an adjunct to reduce chemotherapy-induced ovarian insufficiency."
  • "The Lambertini 2018 individual patient-data meta-analysis of 873 patients found premature ovarian insufficiency of 14.1 per cent with the agonist versus 30.9 per cent control, adjusted odds ratio 0.38, with a higher post-treatment pregnancy rate and no difference in disease-free or overall survival."[5]

Probe 4 — "The patient is in tears. She asks whether she will ever have a child."

This is a scored domain, not a courtesy. Demonstrate it out loud: [1]

  • Move to her eye level, use her name, acknowledge the fear before the facts: "This is a lot to take in, and it is completely understandable that you are frightened. I am sorry you are going through this."
  • Then commit honestly and specifically: "We have a good plan to freeze your eggs now, before chemotherapy, so that you have the option of a genetic child later. I cannot promise a baby, but we are giving you the best possible chance. I will be here with you through it."
  • Avoid false reassurance and avoid jargon; offer a follow-up with the psychologist and written information.[1]

Probe 5 — "What happens after she completes cancer treatment?"

  • Re-test ovarian reserve; if she has premature ovarian insufficiency, start hormone replacement and counsel on bone, cardiovascular and fertility implications.
  • When she is disease-free at the agreed interval, plan return to frozen oocytes with IVF/ICSI, or attempt natural conception if ovarian function returns; donor oocytes remain an option if her own material does not succeed.
  • Document the post-treatment review and offer ongoing psychological support.[1]
Obstetrics & Gynaecology Pro

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You have read the opening of this viva. The complete unit — every section and its primary-source references — is part of the Obstetrics & Gynaecology fellowship library.

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References6ShowHide
  1. [1]Lambertini M, Peccatori FA, Demeestere I, et al. Fertility preservation and post-treatment pregnancies in post-pubertal cancer patients: ESMO Clinical Practice Guidelines Ann Oncol, 2020.PMID 32976936
  2. [2]Oktay K, Harvey BE, Partridge AH, et al. Fertility Preservation in Patients With Cancer: ASCO Clinical Practice Guideline Update J Clin Oncol, 2018.PMID 29620997
  3. [3]Kim J, Turan V, Oktay K Long-Term Safety of Letrozole and Gonadotropin Stimulation for Fertility Preservation in Women With Breast Cancer J Clin Endocrinol Metab, 2016.PMID 26751194
  4. [4]Oktay K, Buyuk E, Libertella N, et al. Fertility preservation in breast cancer patients: a prospective controlled comparison of ovarian stimulation with tamoxifen and letrozole for embryo cryopreservation J Clin Oncol, 2005.PMID 15824416
  5. [5]Lambertini M, Moore HCF, Leonard RCF, et al. Gonadotropin-Releasing Hormone Agonists During Chemotherapy for Preservation of Ovarian Function and Fertility in Premenopausal Patients With Early Breast Cancer: A Systematic Review and Meta-Analysis of Individual Patient-Level Data J Clin Oncol, 2018.PMID 29718793
  6. [6]von Wolff M, Capp E, Jauckus J, et al. Timing of ovarian stimulation in patients prior to gonadotoxic therapy: an analysis of 684 stimulations Eur J Obstet Gynecol Reprod Biol, 2016.PMID 26927896
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