Improving Success in ART: How to define it and key strategies · 2018-09-28 · Improving Success...
Transcript of Improving Success in ART: How to define it and key strategies · 2018-09-28 · Improving Success...
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Improving Success in ART: How to define it and key strategies
to get the best outcomes
Kiev, Ukraine, 21 September 2018
How to define subgroups for COS
Filippo Maria Ubaldi M.D., Ph.D.
GENERA, Centers for Reproductive Medicine, Italy
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Objectives
❑ Show the importance of the number of the oocytes to maximize the CLBR
❑ Show the impact of the female age on embryo chromosomal constitution
❑ Discuss ovarian reserve biomarkers and their role in IVF
❑ Show individualized ovarian stimulation strategies to maximize the CLBR
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What is the aim of IVF?
Live birth of an
healthy baby
Cumulative live birth rate per started cycle
What is the measure of
success in IVF ?
Have the baby as fast aspossible in the most effective
and efficient way
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Effective & efficient IVF approach
❑ Maximize the number of oocytes and consider fresh+frozen ET
(cumulative live birth rates)
Choose the best treatment strategy (iCOS) with the most effective drug
❑ Optimize the lab technologies
- good cryopreservation programme
- blastocyst colture
- select the blastocyst with the highest implantation potential
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❑ Van der Gaast et al-2006 - 13 oocytes; below and above PRs are compromised (n=7,422)
❑ Verberg et al-2009 - 5 for mild stimulation and 10 oocytes for conventional stimulation (meta-analysis ;
mild-313 cycles; conventional-279 cycles)
❑ Bosch et al-2011 - LBR increase up to 15 oocytes maximize the chances of pregnancy (n=7954)
❑ Sunkara et al-2011 - LBR increase up to 15 oocytes; plateaus between 15-20 and decline steadily beyond
20 (n=400,135)
❑ Ji et al-2013 - Optimum - 15 oocytes for LBR below and above PRs are compromised; however,
cumulative LBR increase with increasing oocyte number (n=2,455)
❑ Fatemi et al-2013 - A high ovarian response 18 oocytes does not jeopardize LBR in fresh ET’s and even is
associated with increased cumulative PR (Engage; n=1,506)
Live Birth Rate per fresh embryo transfers
The number of the oocyte is a key factorto maximize cumulative pregnancy rates
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The more oocytes retrieved, the higher is the CLBR
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The more oocytes retrieved, the higher is the CLBR
Increasing the number of the oocytes it increases live
birth rate with frozen cycles
Increasing the number of the oocytes it increases the
risk of OHSS
Retrospective population-based
registry study including 39387 women
undergoing 77956 fresh IVF cycles
(2007–2013) and 36270 FRET
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The increased number of oocyte retrieveddosn’t get worse oocyte competence
Me
ann
um
be
ro
fM
II o
ocy
tes
Mean number of euploid blastocyst
Pearson’s correlationR=0,426P<0,01
Colamaria, Ubaldi oral presentation, ESHRE 2015
27,6%
35,2%
34,8%
Me
ann
um
be
ro
fM
II o
ocy
tes
Mean number of blastocyst
Pearson’s correlationR=0,636P<0,01
915 PGT-A cycles (2610 blastocysts, 24 chr analysis, one Centre), mean female age 39,2 years
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The increased number of oocyte retrieveddosn’t get worse oocyte competence
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Euploidy rate is independent from the numberof obtained blastocyst but not from the age
Number of blastocysts
% normal embryos
egg donors <35 y 35-37 y 38-40 y 41-42 y >42 years
1-3 58% 61% 51% 39% 22% 13%
4-6 62% 60% 52% 38% 23% 17%
7-10 65% 62% 51% 36% 21% 14%
>10 68% 63% 55% 37% 25% n/a
N. = 4,747 cycles and 29,803 embryos. (Modified from Munne)Ata, Munne et al. (2012) Reprod Biomed Online and unpublished data
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Oocyte number and miscarriage rate
Sunkara SK et al. Hum Reprod, 2014
No increase in miscarriage rate with the increase of the oocyte number
Stratified by age and oocyte number1-3 - 4-9 - 10-14 - > 15
Overall association
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STUDY QUESTION: Is there an association between the
number of oocytes retrieved for IVF, and perinatal and
obstetric outcomes?
SUMMARY ANSWER: No significant associa-tion was
found between the number of oocytes and perinatal
outcomes, while an association was found for placenta
praevia
Increased number of oocytes retrieved doesn’tget worse perinatal and obstetric outcomes
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… so we must maximize the oocyte yield …
… but not all patients are the same
What we really need to
know is, how to define the
right individual treatment
for the right patient…
…and the right ovarian
stimulation strategy
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Define the strategy according to the age and the ovarian reserve
Age=
Oocyte quality
Ovarian reserve=
Oocyte quantity
Heffner N Engl J Med, 2004 CDC, 2016 10 y.o. 20 y.o. 30 y.o.
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Embryo euploidy and maternal age
Conclusion(s): Our results confirm the known
inverse relationship between advanced maternal
age (>35 years) and embryo euploidy
Result(s): We analyzed 37711 embryos: 22599 day-3
and 15112 day-5 embryos
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Number of oocyte to obtain an euploid blastocyst and female age
05
101520253035
Do
no
rs
<35
36
-37
38
-39
40
41
42
43
44
Mean # of oocytes
Female age
Oo
cyte
s
With the courtesy of Dr Bosch, IVI Valencia, PGT-A cycles 2016 (n=1145)
<35 39-40 42-43
Euploidy rate 60% Euploidy rate 30% Euploidy rate 20%
2 blastocysts≈
4 fertilizedoocytes
≈
5 MII oocytes≈
6 COCs≈
3 blastocysts≈
6 fertilizedoocytes
≈
8 MII oocytes≈
10 COCs≈
5 blastocysts≈
10 fertilizedoocytes
≈
14 MII oocytes≈
18 COCs≈
GENERA, unpublished data
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We should choose the right approachfor the right patient to yield the
optimal number of oocyte toobtain (at least) one euploid embryo
We have to predict the ovarian reserve
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An ideal biomarker of ovarian reserve should have:
❑ ability to measure ovarian follicle number and oocyte quality
❑ reflect the functional capacity of the ovary
❑ require a minimum number of measurements with few
restrictions on the timing of the sample
❑ must be reliable(Rosen et al., 2012)
Biomarkers to predict the ovarian reserve
To date, no biomarker has been shown to have all these requirements
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Biomarkers to predict the ovarian reserve
❑ 57 Trials; 4,786 women
❑ AUC
– Female age = 0.61
– AFC = 0.79
– AMH = 0.81
– AFC & AMH = 0.85
Broer et al., FS 2013
Ovarian Reserve TestsPrediction of Poor Ovarian Response
❑ 55 Trials; 5705 women
❑ AUC
– Female age = 0.61
– AFC = 0.76
– AMH = 0.78
– AFC & AMH = 0.80
Broer et al-HRU 2013
Prediction of Poor Ovarian ResponsePrediction of Excessive Response
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AMH and AFC as predictors of the ovarian reserve
AMH and AFC:
preferred methods for predicting the ovarian reserve
with a varied degree of precision
(Hendriks, 2005; Iliodromiti, 2014; La Marca, 2010; Lukaszuk, 2013; Polyzos, 2013)
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AMH and AFC can predict low and high ovarian response
Polyzos et al, 2013
Scatter plots and correlations for log 10 primary follicle counts vs ovarian reserve test results (Hansen et al 2011)
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…Although AMH level is an objective test, and therefore should not have the inter-operator variability issues
associated with subjective determination of AFC (Arce et al., 2013), values from manual assays have been shown
to vary between assays as well as laboratories, owing to differences in site-specific processes (Iliodromiti, 2014).
Improper storage and handling of samples, delayed centrifugation, storage at room temperature, can drastically
affect AMH levels (Nelson, 2013) In addition, interference by the serum complement that binds to the assay
antibodies in fresh samples can lead to variability in AMH assays (Craciunas, 2014; Rustamov, 2012, 2014).
AMH Values May Be Falsely Lowered By Storage
Conditions, Assay
Processing and Length of Time Stored
Julie S. Rhee, MD1, Emily A. Seidler, MD1, Elizabeth Eklund, BS2,Amber R. Cooper, MD MSCI1
Limits and pitfalls of ovarian reserve biomarkers:AMH assessment in the real world
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AMH assessment: reliability in the real world
Nap
les
Vic
en
za
The same serum sample, assayed in 3 different labs of 3 different cities
FS 26 10 27 5.9 9.8 6.5
SM 36 5 6 0.5 0.9 3.9
EA 38 20 5 0.9 3.4 1.6
AS 31 6 11 1.6 2.5 3.4
Ro
me
Italy Name AgeDay of
cycle AFCAMH ng/ml
Lab 1 Lab 2 Lab 3
LP 29 3 15 3.4 1.7 2.5
MP 31 9 22 2.4 11.1 4.4
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AFC: pros and cons
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Number of follicles
a little normal a lot
< about 10 about 10 – about 15 > about 15
… but let’s take also into consideration age and if possible AMH
r-FSH 300 IUI + r-LH 150 IU r-FSH 225 IUI r-FSH 150 IUI
Clinical common sense of AFC: let’s use AFC with a pragmatic approach to chose the correct starting dose of gonadotropins
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The ovarian response could be influencedby specific genetic characteristics of gonadotrophins and their receptors
EXON 10
LHCGR 291Asn/Ser (rs12470652)could affect number of
oocytes/FSH consumption
LHCGR 312 Ser/Asn (rs2293275)N variant may render the LHCGR
more sensitive to the ligand
Two single nucleotide polymorphisms of LHCGRaffect sensitivity to exogenous gonadotrophins
Alviggi C, et al.. Hm Repod. 2016 (suppl)
Lindgren I, et al.. Hum Reprod 2016
FSHR Asn680Ser (rs6166) Less oocyte and increased
FSH consumption
FSHR −29G/A (rs1394205)Poor ovarian response
FSHR Thr307Ala (rs6165) Less oocyte and increased
FSH consumption
NCBI-SNP database, more than 730 SNPs in the FSHR
gene. The most studied SNPs:
Greb, et al. JCEM, 2005
Gromoll & Simoni TEM 2005Alviggi et al., 2016
Swapna S et al., JCEM 2011
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FSHR genotype (position 680)
Number of FSH amps needed
for COS and OPU in women
according to the FSH-R genotype
RCT: total FSH dose required (left) and serum E2 concentration (right) in normo-ovulatory women undergoing COS, grouped according to N680S
genotype for the FSH receptor gene (Behre et al.,2005)
The Ser/Ser genotype of the
FSHR gene at position 680
cause a differential E2
response to FSH
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Forest plots of differences among FSHR (rs6166) genotype carriers in relation to the number of oocytes retrieved
(A) (rs6166) A homozygotes versus G homozygotes (C) (rs6166) heterozygotes versus G homozygotes
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Clinical effects of SNPs significantly related to COS outcome
Alviggi et al., Hum Reprod Update 2018
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In case of prediction of hyper-response
normal
Main Objective: safety of the patient
▪ GnRH-antagonist protocol
▪ Low starting dose r-FSH
▪ GnRH-agonist trigger
La Marca and Sunkara. Human Reprod Update, 2014
Modified from La Marca and Sunkara, Hum Reprod Update 2014
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In case of prediction of normo-response
normal
Main Objective: maximize success
▪ GnRH agonist or antagonist ?
▪ Daily r-FSH starting dose ? (200-225 IU)
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In case of prediction of hypo-response
normal
Modified from La Marca and Sunkara, Hum Reprod Update 2014
▪ GnRH antagonist + max r-FSH
▪ DuoStim
▪ Egg donation
Main Objective: try to maximizethe # of oocyte/menstrual cycle
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Can we overcome POR by increasing the FSH dose?YES in group 1-2 POSEIDON: hypo-responders
WHY? ~30%
Reasons for Poor Response:
• FSH dose does not reach threshold
• Genetic polymorphism of FSH-R; LH-R
Increase the dose of FSH
(Perez-Mayorga, 2000; De Castro,
2003; Jun, 2005; Behre 2005)
Add r-LH to FSH
(Ferraretti, 2004; De Placido,
2005; Alviggi, 2013)
▪ Women, with normal ovarian
reserve who show sub-optimal or
unexpected poor response to
exogenous FSH
▪ These women require an
increased cumulative FSH dose
(>2500-3000 IU) & more days of
stimulation (FSH hypo-sensitivity)
GROUP 1 -2
Patients <35 (Group 1) or >35 years (Goup
2) with adequate ovarian reserve
parameters (AFC ≥5; AMH ≥1.2 ng/ml)
and with an unexpected poor or
suboptimal ovarian response
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Can we overcome POR by increasing the FSH dose?NO in group 3-4 POSEIDON: poor ovarian reserve
GROUP 3 - 4
Patients <35 y (Group 3) or >35
years (Group 4) with poor ovarian
reserve pre-stimulation para-meters
(AFC <5; AMH <1.2 ng/ml)
▪ Normo or hyper-gonado-tropicwomen, with reduced ovarianreserve and <3-4 oocytesretrieved
▪ In these women higher doses ofgonadotropins will notcompensate the absen-ce offollicles…
… and then how to increase the number of
oocytes to maximize live birth rates ?
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Baerwald et al Hum Reprod Update 2013 Adams GP et al., J Reprod Fertil, 1992
n. of follicles >5 mm diameter of the largest follicle Baerwald et al, Fertil Steril 2003
2 148 20 26Dayof cycle
Follicle waves in the ovarian cycle
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51 patients with poor ovarian
reserve (AMH <1,5 ng/ml, AFC < 6
follicles and/or < 5 oocyte retrieved
in previous COH) undergoing ICSI
treatment and PGT-A
51 patients started the first stimulationcycle
6 excluded:-no response to the
stimulation
45 patients to egg retrieval
43 patients to egg retrieval
18 FP stimulationcycles with euploid
blastocystobtained
42 patientsperforming FP ICSI
42 patientsperforming LP ICSI
2 excluded:-2 no sperm available
23 LP stimulationcycles with euploid
blastocystobtained
Primary outcome measure:
euploid blastocyst rate.
Secondary outcome measures:
#of retrieved COCS and MII oocytes
300 IU + 150 IU r-FSH + rLH
GnRH-atrigger
GnRH antagonist
OPU
(GnRH antagonist)
GnRH-atrigger OPU
STOP
300 IU + 150 IU r-FSH + rLH
DuoStim increases the oocyte yields per ovarian cycle
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MII oocytesthat did notreach blasto-cyst stage
MII oocytesthat madeaneuploidblastocyst
MII oocytesthat madeeuploidblastocyst
Huge intraovarian follicle waves variabilitySimilar laboratory results between FPS and LPS
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Similar oocyte competence after FPS and LPS
Study question: Are the mean numbers of blastocysts obtained from sibling cohorts of oocytes
recruited after follicular-phase (FPS) and luteal-phase-stimulations (LPS) in the same ovarian
cycle (DuoStim approach) similar?
Study Design, Size and Duration: Case-control study conducted in paired follicular phase- and
luteal phase-derived cohorts of oocytes collected after DuoStim at 2 private IVF clinics
between October 2015 and December 2017
Summary answer: The follicles recruited during the anovulatory phase of the ovarian cycle
may be rescued through LPS and originate larger cohorts of oocytes with comparable
competence than paired-FPS-derived ones.
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Similar oocyte competence after FPS and LPS
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The most remarkable achievement with the DuoStim approach…
96,5% 91,3%
73,9%
42,3%
99,4% 97,4%90,3%
65,5%
0,0%
20,0%
40,0%
60,0%
80,0%
100,0%
120,0%
cycles with ≥1 MII oocyte
cycles with ≥1 fertilized oocyte
cycles with ≥1 blastocyst
cycles with ≥1 euploid blastocyst
Comparison between FPS alone vs DuoStim FPS DuoStimP<0.01
P<0.01
P<0.01
GENERA unpublished data, 2018
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Take home messages
❑ AMH and AFC are methods for predicting the ovarian reserve
with a varied degree of precision.
❑ Ovarian reserve markers are useful to predict ovarian response
❑ FSHR and LHR polymorphisms can affect COS outcome
❑ Individualized COS according to the ovarian reserve of the patient
can maximize Cumulative Live Birth Rate
❑ The female age is correlated with the oocyte and blastocyst
euploidy rate and with the ovarian reserve
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Thank you for your attention
Grazie per la vostra attenzione
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