principles and practices of lh administration in controlled ovarian stimulation
TRANSCRIPT
Principles and Practices of LH administration in
COS Sandro C. Esteves, MD., PhD.
Medical Director, ANDROFERT Andrology & Human Reproduction Clinic
Campinas, BRAZIL
Learning objectives At the completion of this presentation, participants should be able to: 1. Review the principles of LH
supplementation in reproductive cycles 2. Understand the molecular and functional
differences in LH supplementation using the available gonadotropin preparations
3. Appraise the clinical outcome of using LH activity driven by these gonadotropin preparations
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 2 2015
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How do we practice? We use LH supplementation during COS in… i. All patients ii. Poor responders iii. Hypo-responders iv. Older women (>35) v. Hypo-hypo vi. GnRH antagonist protocol
What are the principles of LH supplementation in
COS?
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 4 2015
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Early follicular phase Steroidogenesis (TC)
Late follicular phase Steroidogenesis (TC)
Up-regulates FSHr expression (GC) Sustains follicular growth and final
follicular maturation (GC)
LH physiology in reproductive cycles
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 5 2015
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A minimum level of LH is needed to ensure adequate follicular growth and
androgen production Se
rum
LH
UI/L
1.5
1.0
0.5 0.5 Westergaard 2001 0.7 Fleming 1998
1.2 O’Dea 2000 1.35 Mahmoud 2001
Injected rec-hLH or hMG LH Cmax 75 IU 0.5 – 1.35 IU/l
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 6 2015
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Balasch & Fábreques 2002
• Adequate androgen and estrogen biosynthesis
• Normal follicular development and oocyte maturation N
orm
al
• Follicular atresia • Premature luteinization • Oocyte development compromised H
igh
• Low (and estrogen) synthesis • Impaired follicular maturation • Inadequate endometrial proliferation Lo
w
LH Window
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 7 2015
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u Natural cycle 5.4
3.1
1.68 0.75
0
1
2
3
4
5
6
Seru
m L
H IU
/l
Sd1 Sd8 hCG OPU 0.15
GnRH agonist
Hypo-hypo GnRH antagonist
Endogenous LH levels in natural and stimulated cycles
1.6
4.8
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 8 2015
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Among unselected patients treated with FSH and GnRH analogues for IVF, LH supplementation is NOT
associated with a higher probability of live birth
0.01 0.1 10 100
Study FSH + LH FSH OR (fixed) Weight OR (fixed) n/N n/N 95% CI % 95% CI
Agonist Sills 1999 3/13 10/17 10.00 0.21 [0.04, 1.05] Balasch 2001 0/16 1/14 2.32 0.27 [0.01, 7.25] Humaidan 2004 39/116 31/115 31.00 1.37 [0.78, 2.41] Fabregues 2006 24/60 25/60 22.50 0.93 [0.45, 1.93] Tarlatzis 2006 6/55 10/59 12.90 0.60 [0.20, 1.78]
Subtotal (95% CI) 72/260 77/265 78.72 0.94 [0.64,1.39] Antagonist Sauer 2004 9/25 10/24 9.80 0.79 [0.25, 2.49] Griesinger 2005 8/62 9/65 11.48 0.92 [0.33, 2.56] Subtotal (95% CI) 17/87 19/89 21.28 0.86 [0.40,1.85]
Total (95% CI) 89/347 96/354 100.00
]
advantage r-hFSH Advantage r-hFSH + r-hLH
Kolibianakis, et al. Hum Reprod Update 2007;13:445-452
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 9 2015
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There seems to be NO need of LH supplementation to unselected women treated with FSH and GnRH antagonists
Mochtar et al. 3 RCT (N=216)
Baruffi et al. 5 RCT (N= 434)
Estradiol on hCG day (pg/ml)
WMD 571 (95% CI 259; 882)
WMD 514 (95% CI 368; 660)
No. retrieved oocytes WMD 0.50 (95% CI -0.68; 1.68)
WMD 0.41 (95% CI -0.44; 1.3)
CPR†/LBR* †OR 0.79
(95% CI: 0.26; 2.43) †OR 0.89
(95% CI: 0.57; 1.39)
Mochtar et al. Cochrane Database Syst Rev. 2007;2:CD005070; Baruffi et al, Reprod Biomed Online. 2007;14:14-25.
WMD weight mean difference
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 10 2015
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Impaired oocyte quality Decreased fertilization rate
Reduced embryo quality Increased miscarriage rates
Reduced ovarian
paracrine activity Hurwitz &
Santoro 2004
Androgen secretory capacity reduced
Piltonen et al., 2003
Decreased number of
functional LH receptors Vihko et al.
1996
Reduced LH bioactivity
Mitchell et al. 1995; Marama et al 1984
3-5 in every 10 treated women have aged ovaries
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 11 2015
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ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 12 2015
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Androgen levels markedly lower in aged women
Total Testosterone
↓ 55%
DHEAS ↓ 77%
Free Testosterone
↓ 49%
Androstenedione ↓ 64%
n = 1423
Davison SL et al JCEM 2005;90:3847
LH supplementation improves clinical pregnancy in women >35 yo.
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 13 2015
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Pregnancy rates
increased by 30% in poor responders
treated with r-hLH + r-
hFSH
Lehert et al Reprod Biol Endocrinol 2014, 12:17
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 14 2015
ANDROFERT
Lehert et al 2012
Significant increase of
+0.75 oocytes in poor
responders treated with
r-hFSH + r-hLH Lehert et al Reprod Biol Endocrinol 2014, 12:17
rec-hLH improves oocyte yield in poor Responders
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 15 2015
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0% 5%
10% 15% 20% 25% 30% 35% 40% 45%
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 20 25 30 35 40
Live
birt
h ra
te (%
)
Oocyte number
Observed live birth rate Predicted live birth rate
Sunkara et al. Hum. Reprod., 2011
400,135 IVF cycles
Number of Oocytes and LBR
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 16 2015
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Definition of hypo-responders (initial poor responders) Alviggi et al. RBM online 2006; 2009
• Normal ovarian reserve • Follicular growth stagnation D7-D10
with FSH-only stimulation • Achieve ‘adequate’ response at the
expense of high FSH consumption • Likely to harbor genetic polymorphism
of LH gene (V-LHβ)
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 17 2015
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Hypo-responders benefit from LH Cochrane review 2007
Mochtar MH, Cochrane Database, 2007 issue 2
Favours r-hFSH Favours r-hFSH + r-hLH
Ongoing PR per woman randomized (COS in a GnRH-agonist dow-regulated IVF/ICSI cycle)
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 18 2015
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• Action of LH at the follicular level in a dose dependent manner increases androgen production
• Androgens are then aromatized to estrogens and help restore the follicular milieu
Rationale of LH supplementation (1)
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 19 2015
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ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 20 2015
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Rationale of LH supplementation (2)
Anti-apoptotic effect on granulosa
cells
Up-regulate growth factors
Increase FSH receptor
responsiveness
Act synergistically
with IGF-1
Rimon E et al., 2004; Robinson RS et al., 2007; Tilly JL et al., 1992; Peluso JJ et al., 2001, Ben-Ami I et al., 2009
How do we practice? We prescribe recombinant LH or hMG, which are the gonadotropin containing LH activity
What are the principles of LH supplementation
using rec-hLH or hMG?
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 22 2015
ANDROFERT
Gonadotropins containing LH activity
Leao & Esteves. Clinics 2014; 69(4): 279–293.
Product LH activity (IU/vial)
LH content Purity
hMG (FSH:LH ratio 1:1) 75 hCG* ~5% HP-hMG (FSH:LH ratio1:1) 75 hCG* ~70% Lutroprin alfa (rec-hLH) 75 LH >99% Follitropin alfa + lutroprin alfa 2:1 ratio (150IU recFSH + 75IU recLH)
75 LH >99%
*95% LH bioactivity in hMG from hCG (concentrated or added during purification process; 8 IU hCG ~ 75 IU LH)
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 23 2015
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Fertil Steril 2012; 97(3): 561-72
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 24 2015
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Human Chorionic Gonadotropin • Glycoprotein produced by
syncytiotrophoblast cells of early embryo and by the pituitary in menopause women
• In early pregnancy, hCG rescues the corpus luteum and maintains progesterone production until placental steroidogenesis is established
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 26 2015
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Extracellular fluid
Cytoplasm
Plasma membrane
LH hCG
LH/hCG receptor
Sharing the same α subunit and 81% of AA residues of β subunit, LH and hCG bind to the same receptor
Adapted from: Leao & Esteves. Clinics 2014; 69(4): 279–293.
How do we practice? In general, it is assumed that LH activity driven by either recLH or hCG (hMG) is similar, and many of us opt to prescribe the less costly medication
What are the principles of LH activity driven by
either rec-hLH or hMG?
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 28 2015
ANDROFERT
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 29 2015
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Beta unit
Carboxyl terminal segment
Longer in hCG Higher
receptor affinity in hCG
Absent in LH and present
in hCG Longer half-life
in hCG
Sources of LH Activity Sources of LH
hCG
LH Leao & Esteves. Clinics 2014;69(4):279–293.
Structural characteristics, half-life in serum and downstream effects of LH and hCG following receptor binding
LH hCG Aminoacid number
Alpha subunit Beta subunit
92
121
92
145 N-linked glycosilation sites
Alpha subunit Beta subunit
2 1
2 2
O-linked glycosilation sites -- 4
Carboxyl-terminal segment non-existent present
Half-life (hours) Initial, range of mean
Terminal, range of mean Terminal (SC injection)
0.6-1.3 9-12
21-24
3.9-5.5 23-31 72-96
Response
ED50 (pM)1
Time to maximal cAMP accumulation1
ERK 1/2 activation2
AKT activation2
CYP19A1 expression in presence of ERK1/2 pathway blockade2
530.0 ± 51.2
10 min
strong
strong
increased
107.1 ± 14.3
1 h
weak
minimal
unaffected
1Effect on COS-7/LHCGR cells that constitutively express LH receptors
2Effect on human granulosa cells
Esteves & Alviggi. Principles and practices of COS in ART, Springer 2015
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 30 2015
ANDROFERT
Divergence in receptor-mediated signaling between LH and hCG
Choi & Smitz Mol Cell Endocrinol 2014; 383(1-2):203–13.
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 31 2015
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• ERK/PKA & AKT cell survivor regulators and apoptosis blockers
• P produc;on in preovulatory GCs mainly modulated by ERK/PKA
• In vitro ac;va;on of cAMP pathway associated with apopto;c events
ERK/PKA & AKT pathway (LH) cAMP (hCG)
ERK/PKA & AKT pathways
Casarini et al., 2012; Grzesik et al., 2014
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 32 2015
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• LH significanly more potent to induce EREG gene expression
• Epiregulin plays a key role in oocyte matura:on
Epiregulin (EREG) pathway
Chin & Abayasekara, 2004; Sekiguchi et al., 2004
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 33 2015
ANDROFERT
LH and hCG elicit different gene expression
LH hCG
LHR and FSHR expression Meiosis and follicular matura;on Follicular development Cellular growth Ovarian steroidogenesis Embryo development & survival
Aromatase inhibition Apoptosis
enhancement
LH hCG
Grondal ML et al. Fertil Steril 2009; Menon KM et al. Biol Reprod 2004; Ruvolo et al. Fertil Steril 2007
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 34 2015
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What are the clinical outcomes of using LH
activity driven by either rec-hLH or hMG?
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 35 2015
ANDROFERT
• Cross-over study (n=66) comparing rec-hFSH + rec-hLH (2:1) vs. HP-hMG
• All patients in rFSH+rLH group (vs. 1/3 hMG group) had frozen embryos to transfer if fresh transfer failed
Fábregues F et al. Gynecol Endocrinol. 2013;29(5):430-5.
Type of LH supplementation and number of oocytes retrieved
7.3 9.8
No. oocytes retrieved
HP-HMG rec-FSH + rec-LH
p<0.01
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 36 2015
ANDROFERT
0"20"40"60"80"100"120"
2PN$ Preg.$ IR$ DNA$fragmenta2on$
r4$FSH$hMG$r4FSH$+$r$LH$
*P<0.01
*
* *
Lower apoptosis rate (marker of oocyte quality) in human cumulus cells aOer administra;on of
rec-‐LH to women undergoing COS for IVF
Ruvolo et al. Fertil Steril 2007; 87:542-6
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 37 2015
ANDROFERT
19 14 14
31 26 25
0 5
10 15 20 25 30 35
Fixed 2:1 r-hFSH (150IU)/r-hLH
(75IU)
HMG rec-hFSH + HMG
Duration of Stimulation (days) Mean No. oocytes retrieved IR (%)
CPR per transfer (%)
Buhler KF, Fisher R. Gynecol Endocrinol 2011
Matched case-control study; N=4,719 IVF patients
P=0.02
Type of LH supplementation and pregnancy outcome
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 38 2015
ANDROFERT
How we use LH supplementation in
COS for IVF
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 39 2015
ANDROFERT
Rec-hFSH + rec-hLH (2:1 ratio) from Sd1 Gonadotropin dose per day 450 IU: Ø rec-hFSH 300 IU + rec-hLH 150 IU)
GnRH antagonist (flexible): mean 13mm LH trigger with rec-hCG (mean 17-18 mm
Our preferred regimen in expected poor responders
(AMH≤0.82 and/or history of POR)
2 3 4 5 7 6 8 9 10 11 1
Menses
13
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 40 2015
ANDROFERT
12
Individualized vs. conventional COS in expected poor responders (N=118)
72.0
3.5
45.0
20.0
46.6
4.8 23.3 26.8
0
20
40
60
80
Observed Poor Response (%)
Oocytes retrieved (N)
Cancellation (%) Pregnancy/cycle (%)
cCOS (Long GnRH with r-hFSH) iCOS (GnRH Antag. with r-hFSH+r-hLH)
Expected poor response: AMH<0.82 ng/dL; Observed poor response <5 oocytes retrieved;
Leão RBF, Nakano FY, Esteves SC. Fertil Steril 2013; 100 (Suppl.): S16.
*p<0.05
*
* *
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 41 2015
ANDROFERT
GnRH antagonist flexible protocol Rec-hFSH + rec-hLH (2:1 ratio) from Sd1
Gonadotropin dose/day 225 IU: Ø rec-hFSH 150 IU + rec-hLH 75 IU
How tse LH in Coin S Our preferred regimen in women ≥35yr. and normal ovarian reserve
(AMH>0.82)
2 3 4 5 7 6 8 9 10 1
Menses
13
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 42 2015
ANDROFERT
11 12
GnRH antagonist flexible protocol; i. r-hFSH + r-hLH (2:1 ratio) from Sd6-7
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 43 2015
ANDROFERT
Our preference in hypo-responders (Age <35yr.; AMH >0.82; follicular stagnation
(<10mm) Sd5-7)
Gonadotropin dose per day: 225 IU
2 3 4 5 7 6 8 9 10 11 1 Menses
14
ii. r-hFSH + r-hLH (2:1 ratio) from Sd1 2 3 4 5 7 6 8 9 10 1 13 11 12
12 13
Expected poor responders
§ AMH ≤ 0.82 ng/ml § History of previous IVF a^empt with poor response at a conven;onal s;mula;on
Hypo responders § < 35 yr. § AMH >0.82 ng/ml
§ Follicular stagna;on aOer 6-‐7 days of s;mula;on with r-‐hFSH
2
Start from Sd6-‐7 (1st cycle) Start Sd1 (subsequent
cycles) (1 vial/day)
Start from s;mula;on day 1
(2 vials/day)
Our strategy for LH supplementa;on using 2:1 combina;on of r-‐hFSH + r-‐hLH
§ Expected normo-‐responder (AMH >0.82 ng/ml and no history POR)
Age ≥ 35
Start from s;mula;on day 1
(1 vial/day)
3 1
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 44 2015
ANDROFERT
40.4% 48.0%
ET #3 (FET) 49
ET #2 (FET) 239
ET #1 (fresh) 822
50.5% +18.8%
+25.0% Female Age ≤39 ANDROFERT
332/822 63/239 17/49
Cumulative LBR – IVF/ICSI
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 45 2015
ANDROFERT
ü LH ac;vity has a crucial role in steroidogenesis, follicular growth and matura;on
ü LH supplementa;on to COS in IVF especially benefi;al to aged women (>35), and poor & hypo-‐responders
ü Significant differences exist between LH and hCG at boh the molecular and func;onal level
ü Preliminary evidence indicates that the choice of products containing LH ac;vity impact IVF clinical outcome
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION S ESTEVES, 46 2015
ANDROFERT
Conclusions
Thank you
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