Upload
emery
View
23
Download
0
Tags:
Embed Size (px)
DESCRIPTION
Fertility issues for patients with lymphoma. Cheryl Fitzgerald Dept of Reproductive Medicine St Mary’s Hospital Manchester. Issues to consider. Two diagnoses Malignancy and infertility Counselling Delay in conception Marked decline in female fertility 35 onwards - PowerPoint PPT Presentation
Citation preview
Cheryl FitzgeraldDept of Reproductive Medicine
St Mary’s HospitalManchester
Fertility issues for patients with lymphoma
Issues to consider
• Two diagnoses– Malignancy and infertility– Counselling
• Delay in conception– Marked decline in female fertility 35 onwards
• Effect of disease/treatment– Spermatogenesis– Ovary – oocytes– Uterus – radiotherapy induced damage
Issues affecting fertility
• Delay in conception – female
• Disease
• Surgery
• Chemotherapy
• Radiotherapy
• Long term prognosis – Welfare of Child
• Male
• Options - easy
• Female
• Options complex
Men
• Men and postpubertal boys
• Need to screen for Hep B, Hep C and HIV
• Urgent direct referral
• Phone Andrology SMH – 276 6473
• Produce single (?more) sample
• Frozen in several ampoules
• Stored for up to 55 years
• Sperm used for insemination or IVF
Options for treatment with cryopreserved sperm
• Sperm quality good – use for insemination
• Sperm quality poor – use for IVF
• Treatment within NHS dependent upon NHS assisted conception guidelines
• Sperm can be transferred to private sector is not eligible
Delay in conception - females
Initial treatmentLong term therapy (breast)Time until “cure”
• Age related decline in female fecundity• Age related decline in ovarian reserve• Increase in oocyte aneuploidy• Marked reduction 35 onwards
Effects of chemotherapy
• Damage to primordial follicles• Damage to primary follicles• Oogenesis – many months
• May be temporary disruption
• No benefit from GnRH agonist treatment
• No effect on uterus
Risk factors for iatrogenic POF
• Older women – poor ovarian reserve
• Dose, type and duration of chemotherapy
• Pelvic radiotherapy / TBI
Effects of radiotherapy
• Site specific • Pelvic radiotherapy / TBI
– profound oocyte damage– profound uterine damage
• Oocyte damage– Premature ovarian failure
• Uterine damage– Poor implantation rates after XRT– Poor pregnancy outcome after XRT
Fertility preservation options – pre-treatment
• Cryoprserve ovarian tissue
• Cryopreserve oocytes
• Cryopreserve embryos
• Consider uterine function
Ovarian cryopreservation
• Laparoscopic oophorectomy
• Ovarian cortex frozen in strips
• Later – replace ovarian tissue within pelvis
• Spontaneous/stimulated ovarian cycle
• ?? In vitro maturation in the future
• 10 (+2) babies worldwide
• No time limit on storage
Ovarian storage
• Risks• Very low success
rates• Risk of laparoscopy• Risk of re-introducing
disease
• Benefits• No need for
hyperstimulation• No raised oestradiol
level• No need for partner• Minimal delay in
treatment
Who is suitable?
Lymphoma patients
Very young girls ?? Prepubertal
No metastatic disease in ovaries
Limited time
Primordial follicle grafting
• Stored ovarian tissue
• Primordial follicles grafted into mice
• No need to transplant tissue
Ref. Brison et al
Not published
Egg and embryo freezing
• Need to retrieve mature eggs from ovaries
• No stimulation – single egg – poor success
• Need for ovarian hyperstimulation
Ovarian hyperstimulation cycle
• 10 days of ovarian stimulation – starts with period
• NB – delay caused by waiting for menses
• Vaginal egg recovery
• Ostradiol raised through stimulation
Oocyte cryopreservation
• problematic
• chromosomes on spindle
• aneuploidy after thaw
• zona pellucida and cortical
granule damage
affect fertilisation
• need for ICSI
Oocyte cryopreservation
• Freeze all mature eggs recovered
• Can be stored for 55 years– HFEA Code of Practice 8
• No reduction in “quality” of eggs with increasing time
Oocyte cryopreservation - progress
• Improving ++ vitrification
• Rapid cooling without crystal formation
VitrificationSlow freeze
• Survival 80% 60%
• Fertilisation 75% 65%
• Pregnancy 9% 4%
Safety of egg freezing
• 936 babies
• Birth anomalies – 1.3%
• No difference compared to spontaneously conceived children
• Noyes et al 2009
Embryo cryopreservation
• need a partner
• “urgent” IVF
• minimum time 4-6 weeks
• ovarian hyperstimulation
• oocyte recovery
• eggs inseminated
• embryos created frozen
Risks associated with “urgent” IVF for egg or embryo cryopreservation
• high circulating oestradiol (20 000 cf 500 pmol/l) – issue with Ca breast
• potential seeding of gynae malignancies
• delay in cancer treatment
Egg and embryo cryopreservation
• Risks– High circulating
oestradiol– Delay to treatment– Need for partner
(embryos)– Risk that partner will
“change mind” (embryos)
• Benefits– Successful– Proven method– Proven safety
Chance of baby – embryo freeze
• HFEA data – livebirth per fresh cycle 2008• <35 years 32.8%• 35-37 years 27.3%• 38-39 years 19.0%• 40-42 years 11.8%• 43-44 years 4.8%• >44 years 3.8%• 30% embryo loss with freezing
Embryo freezing
• Freeze all embryos created at pronucleate stage
• Can be stored for 55 years
• No reduction in “quality” of embryos with increased time in storage
Practicalities
• Urgency – referral early
• Fax referral and confirm by phone
• Cycle control – COCP – limits delay
• Details– Timing of chemo– Need for pelvic radiotherapy– Longterm therapies– Prognosis
After treatment
• Referred as any infertility patient
Egg donation
• Donor – IVF stimulation
• Partner sperm for insemination
• Embryo(s) replaced in recipient
• HRT support to 12 weeks of pregnancy
• Success rates – 30-50%
• Right of child to access donor information
Surrogacy
• After hysterectomy / pelvic radiotherapy
• Problematic +++
• No legal contract
• Surrogate – legal mother
Eligibility – IVF in NHS
• NHS IVF guidelines– Female < 40 years– Stable cohabitation >2 years– One partner childless– Only couples treated– Female BMI< 30– No previous sterilisation
Fertility preservation eligibility - NHS
• Female age ? • Cohabitation - ? • One partner childless• Single women treated• BMI ? • No previous sterilisation
• NB – PCT funding – needs agreement
Welfare of the Child
• Legal requirement
• HFEA Act
• Prognosis for patient important
• Partner / family support
Thank-you