Eğitim
1989
1994
Uzmanlık Eğitimi: Zekai Tahir Burak Eğitim ve Araştırma Hastanesi
1983
1989
Tıp Eğitimi: Çukurova Üniversitesi Tıp Fakültesi
Deneyim
2006
Başkent Üniversitesi Ankara Hastanesi
Uzmanlık Alanları
Kadın Hastalıkları ve Doğum
Reprodüktif Endokrinoloji ve İnfertilite
Bilimsel Yayınlar
A. Uluslararası hakemli dergilerde yayımlanan makaleler :
A1. Atasoy Karakas L, Esin S, Sahin Uysal N, Tohma YA, Onalan G, Zeyneloglu HB.
Granulocyte colony-stimulating factor in assisted reproductive technology
treatment does not increase the risk of adverse perinatal outcomes in twin
pregnancies. J Obstet Gynaecol. 2023 Dec;43(1):2186776. doi:
10.1080/01443615.2023.2186776. PMID: 36899463.
A2. Ayhan A, Tunç M, Atasoy Karakaş L, Tekelioğlu T, Haberal Reyhan AN, Önalan G,
Kuşçu E. Oncologic and obstetric outcomes of early-stage epithelial ovarian
cancer patients who underwent fertility-sparing surgery: A retrospective study.
Int J Gynaecol Obstet. 2023 Feb 24. doi: 10.1002/ijgo.14732. Epub ahead of
print. PMID: 36825554.
A3. Zeyneloglu HB, Tohma YA, Gunakan E, Abasıyanık MA, Sozen C, Onalan G. Diet
and pravastatin administration prior to in vitro fertilization treatment
may improve pregnancy outcome in women with dyslipidemia. J Obstet Gynaecol.
2022 Aug;42(6):2235-2240. doi: 10.1080/01443615.2022.2036968. Epub 2022 Mar 8.
PMID: 35257641.
A4. Zeyneloglu HB, Tohma YA, Gunakan E, Onalan G, Eryılmaz T. Dydrogesterone
primed luteal phase stimulation may be better than follicular phase stimulation
in patients with diminished ovarian reserve. Gynecol Endocrinol. 2021
Nov;37(11):1000-1002. doi: 10.1080/09513590.2021.1922885. Epub 2021 May 4. PMID:
33944650.
A5. Balci S, Tohma YA, Esin S, Onalan G, Tekindal MA, Zeyneloglu HB. Gut
dysbiosis may be associated with hyperemesis gravidarum. J Matern Fetal Neonatal
Med. 2022 Jun;35(11):2041-2045. doi: 10.1080/14767058.2020.1777268. Epub 2020
Jun 10. PMID: 32519907.
A6. Tohma YA, Musabak U, Gunakan E, Akilli H, Onalan G, Zeyneloglu HB. The Role
of Analysis of NK Cell Subsets in Peripheral Blood and Uterine Lavage Samples in
Evaluation of Patients with Recurrent Implantation Failure. J Gynecol Obstet Hum
Reprod. 2020 Nov;49(9):101793. doi: 10.1016/j.jogoh.2020.101793. Epub 2020 May
13. PMID: 32413518.
A7. Uysal NŞ, Gülümser Ç, Bilgin Yanık FF, Önalan G, Zeyneloğlu HB. Outcome of
ICSI pregnancies with spontaneous loss of a co-twin compared with singleton ICSI
pregnancies: Single center experience. J Obstet Gynaecol Res. 2020
Mar;46(3):445-450. doi: 10.1111/jog.14177. Epub 2020 Jan 10. PMID: 31922328.
A8. Zeyneloglu HB, Tohma YA, Onalan G, Moran U. Granulocyte colony-stimulating
factor for intracytoplasmic sperm injection patients with repeated implantation
failure: which route is best?†. J Obstet Gynaecol. 2020 May;40(4):526-530. doi:
10.1080/01443615.2019.1631772. Epub 2019 Sep 9. PMID: 31496328.
A9. Tohma YA, Onalan G, Esin S, Sahin H, Aysun D, Kuscu E, Haberal A, Zeyneloglu
HB. Are There Any Predictors of Endometrial Premalignancy/Malignancy within
Endometrial Polyps in Infertile Patients? Gynecol Obstet Invest.
2019;84(5):512-518. doi: 10.1159/000501682. Epub 2019 Jul 16. PMID: 31311015.
A10. Tohma YA, Onalan G, Tepeoglu M, Bayraktar N, Colak E, Ozcimen EE, Zeyneloglu
HB. Phosphodiesterase 4 inhibitor plus metformin is superior to metformin alone
for the treatment of polycystic ovary syndrome: A rat model study. Exp Ther Med.
2019 May;17(5):4013-4022. doi: 10.3892/etm.2019.7428. Epub 2019 Mar 22. PMID:
30988783; PMCID: PMC6447905.
A11. Tohma YA, Zeyneloglu HB, Aslan OD, Haberal AN, Onalan G, Ayhan A. Prevalence
of endometrial cancer or atypical hyperplasia diagnosed incidentally in
infertility clinic. Am J Obstet Gynecol. 2018 Nov;219(5):503-505. doi:
10.1016/j.ajog.2018.08.008. Epub 2018 Aug 15. PMID: 30118694.
A12. Önalan G, Tohma YA, Zeyneloğlu HB. Effect of Etanercept on the Success of
Assisted Reproductive Technology in Patients with Endometrioma. Gynecol Obstet
Invest. 2018;83(4):358-364. doi: 10.1159/000484895. Epub 2017 Nov 24. PMID:
29208847.
A13. Zeyneloglu HB, Onalan G. Remedies for recurrent implantation failure. Semin
Reprod Med. 2014 Jul;32(4):297-305. doi: 10.1055/s-0034-1375182. Epub 2014 Jun
11. PMID: 24919029.
A14. Figen Turkcapar A, Seckin B, Onalan G, Ozdener T, Batioglu S. Human
Menopausal Gonadotropin versus Recombinant FSH in Polycystic Ovary Syndrome
Patients Undergoing In Vitro Fertilization. Int J Fertil Steril. 2013
Jan;6(4):238-43. Epub 2013 Mar 3. PMID: 24520446; PMCID: PMC3850313.
A15. Onalan G, Gulumser C, Mulayim B, Dagdeviren A, Zeyneloglu H. Effects of
amifostine on endometriosis, comparison with N-acetyl cysteine, and leuprolide
as a new treatment alternative: a randomized controlled trial. Arch Gynecol
Obstet. 2014 Jan;289(1):193-200. doi: 10.1007/s00404-013-2963-0. Epub 2013 Jul
24. PMID: 23880890.
A16. Yariz KO, Walsh T, Uzak A, Spiliopoulos M, Duman D, Onalan G, King MC, Tekin
M. Inherited mutation of the luteinizing hormone/choriogonadotropin receptor
(LHCGR) in empty follicle syndrome. Fertil Steril. 2011 Aug;96(2):e125-30. doi:
10.1016/j.fertnstert.2011.05.057. Epub 2011 Jun 17. PMID: 21683950; PMCID:
PMC3143235.
A17. Kıray S, Onalan G, Karabay G, Zeyneloglu H, Kuscu E. Antioxidant prophylaxis
for cellular injury in ovarian surface epithelium resulting from CO?
pneumoperitoneum in a laparoscopic rat model. Arch Gynecol Obstet. 2011
Sep;284(3):765-72. doi: 10.1007/s00404-011-1933-7. Epub 2011 May 27. PMID:
21617921.
A18. Onalan G, Yilmaz Z, Durak T, Sahin FI, Zeyneloglu HB. Successful pregnancy
with preimplantation genetic diagnosis in a woman with mosaic Turner syndrome.
Fertil Steril. 2011 Apr;95(5):1788.e1-3. doi: 10.1016/j.fertnstert.2010.12.055.
Epub 2011 Jan 26. PMID: 21272868.
A19. Kaya C, Onalan G, Cengiz SD. An increase in systolic blood pressure and
abnormal circadian blood pressure regulation in lean women with polycystic ovary
syndrome. Eur J Obstet Gynecol Reprod Biol. 2010 Jun;150(2):217-8. doi:
10.1016/j.ejogrb.2010.02.018. Epub 2010 Mar 4. PMID: 20206433.
A20. Onalan G, Mulayim B, Toprak T, Baser E, Zeyneloglu HB. Extrauterine
displaced intrauterine devices: when should they be surgically removed? Taiwan J
Obstet Gynecol. 2009 Dec;48(4):415-6. doi: 10.1016/S1028-4559(09)60334-X. PMID:
20045766.
A21. Tonguc E, Var T, Onalan G, Altinbas S, Tokmak A, Karakaş N, Gulerman C.
Comparison of the effectiveness of single versus double intrauterine
insemination with three different timing regimens. Fertil Steril. 2010
Sep;94(4):1267-1270. doi: 10.1016/j.fertnstert.2009.08.030. Epub 2009 Sep 26.
PMID: 19782353.
A22. Onalan G, Zeyneloglu HB, Bayraktar N. Fenofibrate causes regression of
endometriotic implants: a rat model. Fertil Steril. 2009 Dec;92(6):2100-2. doi:
10.1016/j.fertnstert.2009.05.065. Epub 2009 Jul 5. PMID: 19580963.
A23. Akkaya P, Onalan G, Haberal N, Bayraktar N, Mülayim B, Zeyneloglu HB.
Doxycycline causes regression of endometriotic implants: a rat model. Hum
Reprod. 2009 Aug;24(8):1900-8. doi: 10.1093/humrep/dep106. Epub 2009 Apr 28.
PMID: 19401321.
A24. Mulayim B, Celik NY, Onalan G, Bagis T, Zeyneloglu HB. Sublingual
misoprostol for cervical ripening before diagnostic hysteroscopy in
premenopausal women: a randomized, double blind, placebo-controlled trial.
Fertil Steril. 2010 May 1;93(7):2400-4. doi: 10.1016/j.fertnstert.2009.01.073.
Epub 2009 Feb 24. PMID: 19243750.
A25. Mulayim B, Celik NY, Onalan G, Zeyneloglu HB, Kuscu E. Sublingual
misoprostol after surgical management of early termination of pregnancy. Fertil
Steril. 2009 Aug;92(2):678-81. doi: 10.1016/j.fertnstert.2008.07.1706. Epub 2008
Sep 6. PMID: 18774567.
A26. Pabuccu R, Onalan G, Kaya C, Selam B, Ceyhan T, Ornek T, Kuzudisli E.
Efficiency and pregnancy outcome of serial intrauterine device-guided
hysteroscopic adhesiolysis of intrauterine synechiae. Fertil Steril. 2008
Nov;90(5):1973-7. doi: 10.1016/j.fertnstert.2007.06.074. Epub 2008 Sep 6. PMID:
18774563.
A27. Onalan R, Onalan G, Tonguc E, Ozdener T, Dogan M, Mollamahmutoglu L. Body
mass index is an independent risk factor for the development of endometrial
polyps in patients undergoing in vitro fertilization. Fertil Steril. 2009
Apr;91(4):1056-60. doi: 10.1016/j.fertnstert.2008.01.002. Epub 2008 Mar 5. PMID:
18325506.
A28. Pabuccu R, Onalan G, Kaya C. GnRH agonist and antagonist protocols for stage
I-II endometriosis and endometrioma in in vitro fertilization/intracytoplasmic
sperm injection cycles. Fertil Steril. 2007 Oct;88(4):832-9. doi:
10.1016/j.fertnstert.2006.12.046. Epub 2007 Apr 10. PMID: 17428479.
A29. Cincik M, Baykal B, Zeteroglu S, Onalan G, Ceyhan ST, Ergur R. Pronuclear
synchronization and nuclear morphology of mature and in vitro matured oocytes in
the rat: an ultrastructural study. In Vitro Cell Dev Biol Anim. 2005 Sep-
Oct;41(8-9):272-7. doi: 10.1290/0505030R.1. PMID: 16409113.
A30. Onalan R, Onalan G, Gunenc Z, Karabulut E. Combining 2nd-trimester maternal
serum homocysteine levels and uterine artery Doppler for prediction of
preeclampsia and isolated intrauterine growth restriction. Gynecol Obstet
Invest. 2006;61(3):142-8. doi: 10.1159/000090432. Epub 2005 Dec 20. PMID:
16374017.
A31. Onalan G, Goktolga U, Ceyhan T, Bagis T, Onalan R, Pabuçcu R. Predictive
value of glucose-insulin ratio in PCOS and profile of women who will benefit
from metformin therapy: obese, lean, hyper or normoinsulinemic? Eur J Obstet
Gynecol Reprod Biol. 2005 Dec 1;123(2):204-11. doi:
10.1016/j.ejogrb.2005.05.010. PMID: 16316811.
A32. Pabuccu R, Ceyhan ST, Onalan G, Goktolga U, Ercan CM, Selam B. Successful
treatment of cervical stenosis with hysteroscopic canalization before embryo
transfer in patients undergoing IVF: a case series. J Minim Invasive Gynecol.
2005 Sep-Oct;12(5):436-8. doi: 10.1016/j.jmig.2005.06.003. PMID: 16213431.
A33. Onalan G, Onalan R, Selam B, Akar M, Gunenc Z, Topcuoglu A. Mood scores in
relation to hormone replacement therapies during menopause: a prospective
randomized trial. Tohoku J Exp Med. 2005 Nov;207(3):223-31. doi:
10.1620/tjem.207.223. PMID: 16210834.
A34. Onalan G, Pabuçcu R, Goktolga U, Ceyhan T, Bagis T, Cincik M. Metformin
treatment in patients with polycystic ovary syndrome undergoing in vitro
fertilization: a prospective randomized trial. Fertil Steril. 2005
Sep;84(3):798-801. doi: 10.1016/j.fertnstert.2005.03.043. PMID: 16169430.
A35. Onalan G, Selam B, Onalan R, Ceyhan T, Cincik M, Pabuccu R. Serum and
follicular fluid levels of soluble Fas and soluble Fas ligand in IVF cycles. Eur
J Obstet Gynecol Reprod Biol. 2006 Mar 1;125(1):85-91. doi:
10.1016/j.ejogrb.2005.08.002. Epub 2005 Sep 2. PMID: 16140454.
A36. Onalan G, Selam B, Baran Y, Cincik M, Onalan R, Gündüz U, Ural AU, Pabuccu
R. Serum and follicular fluid levels of soluble Fas, soluble Fas ligand and
apoptosis of luteinized granulosa cells in PCOS patients undergoing IVF. Hum
Reprod. 2005 Sep;20(9):2391-5. doi: 10.1093/humrep/dei068. Epub 2005 Jun 2.
PMID: 15932917.
A37. Günenç MZ, Yesildaglar N, Bingöl B, Onalan G, Tabak S, Gökmen B. The safety
and efficacy of direct trocar insertion with elevation of the rectus sheath
instead of the skin for pneumoperitoneum. Surg Laparosc Endosc Percutan Tech.
2005 Apr;15(2):80-1. doi: 10.1097/01.sle.0000162106.95875.b9. PMID: 15821619.
A38. Pabuccu R, Onalan G, Goktolga U, Kucuk T, Orhon E, Ceyhan T. Aspiration of
ovarian endometriomas before intracytoplasmic sperm injection. Fertil Steril.
2004 Sep;82(3):705-11. doi: 10.1016/j.fertnstert.2004.02.117. PMID: 15374718.
A39. Paşaoğlu H, Bulduk G, Oğüş E, Paşaoğlu A, Onalan G. Nitric oxide, lipid
peroxides, and uric acid levels in pre-eclampsia and eclampsia. Tohoku J Exp
Med. 2004 Feb;202(2):87-92. doi: 10.1620/tjem.202.87. PMID: 14998302.
A40. Onalan G, Pabuçcu R, Onalan R, Ceylaner S, Selam B. Empty follicle syndrome
in two sisters with three cycles: case report. Hum Reprod. 2003
Sep;18(9):1864-7. doi: 10.1093/humrep/deg371. PMID: 12923140.
