Clinical trial NCT02286284: Usefulness of Extracorporeal Removal of sFLT-1 in Women With Very Early Severe Preeclampsia
Official title: Usefulness of Extracorporeal Removal of sFlt-1 in Women With Severe Preeclampsia at Less Than 26 Weeks' Gestation
Study type: INTERVENTIONAL
Overall status: TERMINATED
Phase: PHASE2
Conditions: Preeclampsia
Keywords: Early severe preeclampsia
Angiogenic factor
Apheresis
Lead sponsor: Assistance Publique - Hôpitaux de Paris
Sponsor class: OTHER
First posted: 2014-11-07
Enrollment: 2
Sex: FEMALE
Minimum age (years): 18
Maximum age (years): 45
Standard ages: ADULT
Accepts healthy volunteers: no
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: TREATMENT

Brief summary: Introduction Preeclampsia is a multifactorial disease that is responsible of important adverse maternal and perinatal outcomes. Recently, it has been suggested that soluble fms-like tyrosine kinase 1, s-Flt1, induces preeclampsia-like phenotype in experimental models and circulates at elevated levels in human preeclampsia.

The aim of our study is to see whether removal of s-Flt1 may improve perinatal death in women with very early severe preeclampsia at less than 26 weeks' gestation Patients and methods Phase II trial. Women with singleton pregnancy having severe preeclampsia at 23-256/7 weeks' gestation. Women under 18 years, with multiples, or severe fetal growth restriction (less than 5th centile), or abnormal fetal heart rate, or maternal complications (abruption, eclampsia, HELLP syndrome, pulmonary edema, DIC, liver hematoma) are excluded from the study. After blood pressure and maternal stabilization, women are approached for information and if they agree, to sign the trial consent.

Women have twice weekly extracorporeal removal of s-Flt1 until 34 weeks' gestation.

Primary endpoint or success of the procedure: baby alive or alive at 6 months if hospitalized Statistical procedure Simon minimax plan; P0: 60%, P1, 90%, alpha error: 5%, beta power; 90%. First step: number 8 patients. If success equal or less than 5, the study is stopped.

Second step: if success of 6 or more, the study is continued for 9 more patients.

Overall, a maximum of 17 patients will be included. The final success of extracorporeal removal of s-Flt1 will be considered if 14 or more babies will be alive or alive at 6 months if hospitalized.

Detailed description: Introduction Preeclampsia is a multifactorial disease that is responsible of important adverse maternal and perinatal outcomes. Recently, it has been suggested that soluble fms-like tyrosine kinase 1, s-Flt1, induces preeclampsia-like phenotype in experimental models and circulates at elevated levels in human preeclampsia.

The aim of our study is to see whether removal of s-Flt1 may improve perinatal death in women with very early severe preeclampsia at less than 26 weeks' gestation Patients and methods Phase II trial. Women with singleton pregnancy having severe preeclampsia at 23-256/7 weeks' gestation. Women under 18 years, with multiples, or severe fetal growth restriction (less than 5th centile), or abnormal fetal heart rate, or maternal complications (abruption, eclampsia, HELLP syndrome, pulmonary edema, DIC, liver hematoma) are excluded from the study. After blood pressure and maternal stabilization, women are approached for information and if they agree, to sign the trial consent.

They will then be admitted to the department of Renal intensive care of Tenon Hospital. LDL apheresis will be performed twice weekly, during 90 minutes per session, using the DALI 750 Kit and the ART device (Fresenius). sFlt1 will be measured in peripheral blood before and after each session. The treatment will end when delivery is indicated (whether because of threatening complications or because a viable term of pregnancy is achieved).

Primary endpoint or success of the procedure: a live born baby alive at 6 month after birth.

Secondary endpoints: days of pregnancy prolongation, blood pressure during apheresis, fetal heart rate monitoring after apheresis, maternal levels of s-Flt1, PlGF, and s-endoglin.

Maternal adverse outcomes: eclampsia, HELLP syndrome, DIC, pulmonary edema, abruption placentae, renal failure.

Neonatal outcome: gestational age at delivery, birth weight, Apgar score, patent ductus arteriosus, RDS, PVL, IVH, NEC, days in NICU.

Statistical procedure Simon minimax plan; P0: 60%, P1, 90%, alpha error: 5%, beta power; 90%. First step: number 8 patients. If success equal or less than 5, the study is stopped.

Second step: if success of 6 or more, the study is continued for 9 more patients.

Overall, a maximum of 17 patients will be included. The final success of extracorporeal removal of s-Flt1 will be considered if 14 or more babies will be alive at 6 months after birth

Eligibility criteria: Inclusion Criteria:

* Severe preeclampsia at less than 26 weeks' gestation
* Singleton pregnancy
* Signed consent

Exclusion Criteria:

* Multiple pregnancy
* Gestational age at 26 or above weeks' gestation
* Estimated foetal weight at diagnosis \<5th percentile
* Abnormal fetal heart rate at entry, where feasible (\>24 weeks' gestation)
* Maternal complications at diagnosis: Uncontrolled blood pressure, HELLP syndrome, abruption, eclampsia pulmonary edema, renal failure, liver hematoma

Primary outcomes:
measure: Baby discharged alive or alive at 6 months if hospitalized
timeFrame: 6 months
Secondary outcomes:
measure: Pregnancy prolongation and preeclampsia related adverse outcomes
timeFrame: 15 weeks
measure: Immunoadsorption tolerance for the mother during the session of lipapheresis
timeFrame: 11 weeks
measure: Foetal immunoadsorption tolerance during the session of lipapheresis
timeFrame: 11 weeks
measure: Circulating levels of sFlt1, the placental growth factor (PlGF) and soluble endoglin (sEng) until deliverance
timeFrame: 12 weeks
Other outcomes:
Locations:
city: Créteil
country: France
facility: CHIC
Study officials:
affiliation: CHIC Creteil
name: Bassam HADDAD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Anedda S, Mura S, Marcello C, Pintus P. HELP LDL-apheresis in two cases of familial hypercholesterolemic pregnant women. Transfus Apher Sci. 2011 Feb;44(1):21-4. doi: 10.1016/j.transci.2010.12.004. Epub 2011 Jan 22.
citation: Belghiti J, Kayem G, Tsatsaris V, Goffinet F, Sibai BM, Haddad B. Benefits and risks of expectant management of severe preeclampsia at less than 26 weeks gestation: the impact of gestational age and severe fetal growth restriction. Am J Obstet Gynecol. 2011 Nov;205(5):465.e1-6. doi: 10.1016/j.ajog.2011.06.062. Epub 2011 Jun 24.
citation: Cashin-Hemphill L, Noone M, Abbott JF, Waksmonski CA, Lees RS. Low-density lipoprotein apheresis therapy during pregnancy. Am J Cardiol. 2000 Nov 15;86(10):1160, A10. doi: 10.1016/s0002-9149(00)01183-8.
citation: Deis S, Rouzier R, Kayem G, Masson C, Haddad B. Development of a nomogram to predict occurrence of preeclampsia. Eur J Obstet Gynecol Reprod Biol. 2008 Apr;137(2):146-51. doi: 10.1016/j.ejogrb.2007.05.022. Epub 2007 Jul 31.
citation: Azizi M, Chedid A, Oudard S. Home blood-pressure monitoring in patients receiving sunitinib. N Engl J Med. 2008 Jan 3;358(1):95-7. doi: 10.1056/NEJMc072330. No abstract available.
citation: Chelbi ST, Veitia RA, Vaiman D. Why preeclampsia still exists? Med Hypotheses. 2013 Aug;81(2):259-63. doi: 10.1016/j.mehy.2013.04.034. Epub 2013 May 10.
citation: Eremina V, Sood M, Haigh J, Nagy A, Lajoie G, Ferrara N, Gerber HP, Kikkawa Y, Miner JH, Quaggin SE. Glomerular-specific alterations of VEGF-A expression lead to distinct congenital and acquired renal diseases. J Clin Invest. 2003 Mar;111(5):707-16. doi: 10.1172/JCI17423.
citation: Haddad B, Masson C, Deis S, Touboul C, Kayem G; College national des gynecologues et obstetriciens; Societe francaise de medecine perinatale; Societe francaise de neonatalogie; Societe francaise de anesthesie et de reanimation. [Criteria of pregnancy termination in women with preeclampsia]. Ann Fr Anesth Reanim. 2010 Apr;29(4):e59-68. doi: 10.1016/j.annfar.2010.02.019. Epub 2010 Mar 27. French.
citation: Haddad B, Deis S, Goffinet F, Paniel BJ, Cabrol D, Siba BM. Maternal and perinatal outcomes during expectant management of 239 severe preeclamptic women between 24 and 33 weeks' gestation. Am J Obstet Gynecol. 2004 Jun;190(6):1590-5; discussion 1595-7. doi: 10.1016/j.ajog.2004.03.050.
citation: Kabbinavar F, Hurwitz HI, Fehrenbacher L, Meropol NJ, Novotny WF, Lieberman G, Griffing S, Bergsland E. Phase II, randomized trial comparing bevacizumab plus fluorouracil (FU)/leucovorin (LV) with FU/LV alone in patients with metastatic colorectal cancer. J Clin Oncol. 2003 Jan 1;21(1):60-5. doi: 10.1200/JCO.2003.10.066.
citation: Levine RJ, Qian C, Maynard SE, Yu KF, Epstein FH, Karumanchi SA. Serum sFlt1 concentration during preeclampsia and mid trimester blood pressure in healthy nulliparous women. Am J Obstet Gynecol. 2006 Apr;194(4):1034-41. doi: 10.1016/j.ajog.2005.10.192.
citation: Maynard SE, Min JY, Merchan J, Lim KH, Li J, Mondal S, Libermann TA, Morgan JP, Sellke FW, Stillman IE, Epstein FH, Sukhatme VP, Karumanchi SA. Excess placental soluble fms-like tyrosine kinase 1 (sFlt1) may contribute to endothelial dysfunction, hypertension, and proteinuria in preeclampsia. J Clin Invest. 2003 Mar;111(5):649-58. doi: 10.1172/JCI17189.
citation: Romero R, Nien JK, Espinoza J, Todem D, Fu W, Chung H, Kusanovic JP, Gotsch F, Erez O, Mazaki-Tovi S, Gomez R, Edwin S, Chaiworapongsa T, Levine RJ, Karumanchi SA. A longitudinal study of angiogenic (placental growth factor) and anti-angiogenic (soluble endoglin and soluble vascular endothelial growth factor receptor-1) factors in normal pregnancy and patients destined to develop preeclampsia and deliver a small for gestational age neonate. J Matern Fetal Neonatal Med. 2008 Jan;21(1):9-23. doi: 10.1080/14767050701830480.
citation: Steegers EA, von Dadelszen P, Duvekot JJ, Pijnenborg R. Pre-eclampsia. Lancet. 2010 Aug 21;376(9741):631-44. doi: 10.1016/S0140-6736(10)60279-6. Epub 2010 Jul 2.
citation: Sugimoto H, Hamano Y, Charytan D, Cosgrove D, Kieran M, Sudhakar A, Kalluri R. Neutralization of circulating vascular endothelial growth factor (VEGF) by anti-VEGF antibodies and soluble VEGF receptor 1 (sFlt-1) induces proteinuria. J Biol Chem. 2003 Apr 11;278(15):12605-8. doi: 10.1074/jbc.C300012200. Epub 2003 Jan 21.
citation: Thadhani R, Kisner T, Hagmann H, Bossung V, Noack S, Schaarschmidt W, Jank A, Kribs A, Cornely OA, Kreyssig C, Hemphill L, Rigby AC, Khedkar S, Lindner TH, Mallmann P, Stepan H, Karumanchi SA, Benzing T. Pilot study of extracorporeal removal of soluble fms-like tyrosine kinase 1 in preeclampsia. Circulation. 2011 Aug 23;124(8):940-50. doi: 10.1161/CIRCULATIONAHA.111.034793. Epub 2011 Aug 1.
citation: Thadhani R, Mutter WP, Wolf M, Levine RJ, Taylor RN, Sukhatme VP, Ecker J, Karumanchi SA. First trimester placental growth factor and soluble fms-like tyrosine kinase 1 and risk for preeclampsia. J Clin Endocrinol Metab. 2004 Feb;89(2):770-5. doi: 10.1210/jc.2003-031244.