Karen Klein

TitleVolunteer Faculty
InstitutionThomas Jefferson University
DepartmentFaculty Records
Address833 Chestnut Street
Philadelphia PA 19107
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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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    PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Kanakatti Shankar R, Carl A, Law JR, Bamba V, Brickman WJ, Prakash SK, Dowlut McElroy T, Howell S, Gutmark Little I, Klein KO, Pinnaro CT, Ranallo K, Good M, Davis SM. Inspiring New Science to Guide Healthcare in Turner Syndrome: Rationale, design, and methods for the InsighTS Registry. Am J Med Genet A. 2023 Oct 12. PMID: 37827984.
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    2. Klein KO, Mauras N, Nayak S, Sunil B, Martinez-Placencia BM, Dragnic S, Ballina M, Zhou Q, Kansra AR. Efficacy and Safety of Leuprolide Acetate 6-Month Depot for the Treatment of Central Precocious Puberty: A Phase 3 Study. J Endocr Soc. 2023 Jun 05; 7(7):bvad071. PMID: 37334213.
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    3. Trujillo MV, Lee PA, Reifschneider K, Backeljauw PF, Dragnic S, Van Komen S, Yu J, Klein KO. Using change in predicted adult height during GnRH agonist treatment for individualized treatment decisions in girls with central precocious puberty. J Pediatr Endocrinol Metab. 2022 Dec 05. PMID: 36473097.
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    4. Trujillo MV, Rungvivatjarus T, Klein KO. Incidence of central precocious puberty more than doubled during COVID-19 pandemic: Single-center retrospective review in the United States. Front Pediatr. 2022; 10:1007730. PMID: 36533230.
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    5. Popovic J, Geffner ME, Rogol AD, Silverman LA, Kaplowitz PB, Mauras N, Zeitler P, Eugster EA, Klein KO. Gonadotropin-releasing hormone analog therapies for children with central precocious puberty in the United States. Front Pediatr. 2022; 10:968485. PMID: 36268040.
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    6. Briscoe A, Chen K, Klein KO. No pubertal growth spurt, rapid bone maturation, and menarche post GnRHa treatment in girls with precocious puberty. J Pediatr Endocrinol Metab. 2022 Nov 25; 35(11):1401-1409. PMID: 36114751.
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    7. Vargas Trujillo M, Dragnic S, Aldridge P, Klein KO. Importance of individualizing treatment decisions in girls with central precocious puberty when initiating treatment after age 7 years or continuing beyond a chronological age of 10 years or a bone age of 12 years. J Pediatr Endocrinol Metab. 2021 Jun 25; 34(6):733-739. PMID: 33856747.
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    8. Klein KO, Freire A, Gryngarten MG, Kletter GB, Benson M, Miller BS, Dajani TS, Eugster EA, Mauras N. Phase 3 Trial of a Small-volume Subcutaneous 6-Month Duration Leuprolide Acetate Treatment for Central Precocious Puberty. J Clin Endocrinol Metab. 2020 10 01; 105(10). PMID: 32738042.
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    9. Cafferata ML, Toscani MA, Althabe F, Beliz?n JM, Bergel E, Berrueta M, Capparelli EV, Ciganda ?, Danesi E, Dumonteil E, Gibbons L, Gulayin PE, Herrera C, Momper JD, Rossi S, Shaffer JG, Schijman AG, Sosa-Estani S, Stella CB, Klein K, Buekens P. Short-course Benznidazole treatment to reduce Trypanosoma cruzi parasitic load in women of reproductive age (BETTY): a non-inferiority randomized controlled trial study protocol. Reprod Health. 2020 Aug 24; 17(1):128. PMID: 32831069.
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    10. Klein KO, Soliman AM, Grubb E, Nisbet P. A survey of care pathway and health-related quality of life impact for children with central precocious puberty. Curr Med Res Opin. 2020 03; 36(3):411-418. PMID: 31778082.
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    11. Klein KO, Soliman AM, Bonafede M, Nelson JK, Grubb E. Treatment patterns, health resource utilization and costs among central precocious puberty patients treated with leuprolide or histrelin: an examination of the commercial and Medicaid populations. J Med Econ. 2020 Apr; 23(4):407-414. PMID: 31766907.
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    12. Bangalore Krishna K, Fuqua JS, Rogol AD, Klein KO, Popovic J, Houk CP, Charmandari E, Lee PA, Freire AV, Ropelato MG, Yazid Jalaludin M, Mbogo J, Kanaka-Gantenbein C, Luo X, Eugster EA, Klein KO, Vogiatzi MG, Reifschneider K, Bamba V, Garcia Rudaz C, Kaplowitz P, Backeljauw P, Allen DB, Palmert MR, Harrington J, Guerra-Junior G, Stanley T, Torres Tamayo M, Miranda Lora AL, Bajpai A, Silverman LA, Miller BS, Dayal A, Horikawa R, Oberfield S, Rogol AD, Tajima T, Popovic J, Witchel SF, Rosenthal SM, Finlayson C, Hannema SE, Castilla-Peon MF, Mericq V, Medina Bravo PG. Use of Gonadotropin-Releasing Hormone Analogs in Children: Update by an International Consortium. Horm Res Paediatr. 2019; 91(6):357-372. PMID: 31319416.
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    13. Klein K, Soliman AM, Bonafede M, Nelson JK, Grubb E. Health Care Utilization and Economic Burden in Patients with Central Precocious Puberty: An Assessment of the Commercially Insured and Medicaid Populations. J Manag Care Spec Pharm. 2019 Jul; 25(7):836-846. PMID: 31232203.
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    14. Klein KO, Phillips SA. Review of Hormone Replacement Therapy in Girls and Adolescents with Hypogonadism. J Pediatr Adolesc Gynecol. 2019 Oct; 32(5):460-468. PMID: 31059821.
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    15. Backeljauw P, Klein K. Sex hormone replacement therapy for individuals with Turner syndrome. Am J Med Genet C Semin Med Genet. 2019 03; 181(1):13-17. PMID: 30809949.
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    16. Grand K, Gonzalez-Gandolfi C, Ackermann AM, Aljeaid D, Bedoukian E, Bird LM, De Leon DD, Diaz J, Hopkin RJ, Kadakia SP, Keena B, Klein KO, Krantz I, Leon E, Lord K, McDougall C, Medne L, Skraban CM, Stanley CA, Tarpinian J, Zackai E, Deardorff MA, Kalish JM. Hyperinsulinemic hypoglycemia in seven patients with de novo NSD1 mutations. Am J Med Genet A. 2019 04; 179(4):542-551. PMID: 30719864.
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    17. Klein KO, Dragnic S, Soliman AM, Bacher P. Predictors of bone maturation, growth rate and adult height in children with central precocious puberty treated with depot leuprolide acetate. J Pediatr Endocrinol Metab. 2018 Jun 27; 31(6):655-663. PMID: 29750651.
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    18. Klein KO, Rosenfield RL, Santen RJ, Gawlik AM, Backeljauw PF, Gravholt CH, Sas TCJ, Mauras N. Estrogen Replacement in Turner Syndrome: Literature Review and Practical Considerations. J Clin Endocrinol Metab. 2018 05 01; 103(5):1790-1803. PMID: 29438552.
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    19. Williams VSL, Soliman AM, Barrett AM, Klein KO. Review and evaluation of patient-centered psychosocial assessments for children with central precocious puberty or early puberty. J Pediatr Endocrinol Metab. 2018 Apr 25; 31(5):485-495. PMID: 29649000.
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    20. Klein KO, Lee PA. Gonadotropin-Releasing Hormone (GnRHa) Therapy for Central Precocious Puberty (CPP): Review of Nuances in Assessment of Height, Hormonal Suppression, Psychosocial Issues, and Weight Gain, with Patient Examples. Pediatr Endocrinol Rev. 2018 Apr; 15(4):298-312. PMID: 29806750.
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    21. Gravholt CH, Andersen NH, Conway GS, Dekkers OM, Geffner ME, Klein KO, Lin AE, Mauras N, Quigley CA, Rubin K, Sandberg DE, Sas TCJ, Silberbach M, S?derstr?m-Anttila V, Stochholm K, van Alfen-van derVelden JA, Woelfle J, Backeljauw PF. Clinical practice guidelines for the care of girls and women with Turner syndrome: proceedings from the 2016 Cincinnati International Turner Syndrome Meeting. Eur J Endocrinol. 2017 09; 177(3):G1-G70. PMID: 28705803.
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    22. Klein K, Yang J, Aisenberg J, Wright N, Kaplowitz P, Lahlou N, Linares J, Lundstr?m E, Purcea D, Cassorla F. Efficacy and safety of triptorelin 6-month formulation in patients with central precocious puberty. J Pediatr Endocrinol Metab. 2016 Nov 01; 29(11):1241-1248. PMID: 26887034.
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    23. Klein KO, Newfield RS, Hassink SG. Bone maturation along the spectrum from normal weight to obesity: a complex interplay of sex, growth factors and weight gain. J Pediatr Endocrinol Metab. 2016 Mar; 29(3):311-8. PMID: 26565541.
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    24. Pereira A, Corval?n C, Uauy R, Klein KO, Mericq V. Ultrasensitive estrogen levels at 7 years of age predict earlier thelarche: evidence from girls of the growth and obesity Chilean cohort. Eur J Endocrinol. 2015 Dec; 173(6):835-42. PMID: 26369578.
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    25. Al-Zubeidi H, Klein KO. Randomized clinical trial evaluating metformin versus oral contraceptive pills in the treatment of adolescents with polycystic ovarian syndrome. J Pediatr Endocrinol Metab. 2015 Jul; 28(7-8):853-8. PMID: 25781525.
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    26. Klein KO. Is there a role for estrogen activity assays? Recombinant cell bioassay for estrogen: Development and applications. Steroids. 2015 Jul; 99(Pt A):108-12. PMID: 25159103.
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    27. Kletter GB, Klein KO, Wong YY. A pediatrician's guide to central precocious puberty. Clin Pediatr (Phila). 2015 May; 54(5):414-24. PMID: 25022947.
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    28. Lee PA, Klein K, Mauras N, Lev-Vaisler T, Bacher P. 36-month treatment experience of two doses of leuprolide acetate 3-month depot for children with central precocious puberty. J Clin Endocrinol Metab. 2014 Sep; 99(9):3153-9. PMID: 24926950.
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    29. Bardach A, Cafferata ML, Klein K, Cormick G, Gibbons L, Ruvinsky S. Incidence and use of resources for chickenpox and herpes zoster in Latin America and the Caribbean--a systematic review and meta-analysis. Pediatr Infect Dis J. 2012 Dec; 31(12):1263-8. PMID: 23188098.
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    30. Lee PA, Klein K, Mauras N, Neely EK, Bloch CA, Larsen L, Mattia-Goldberg C, Chwalisz K. Efficacy and safety of leuprolide acetate 3-month depot 11.25 milligrams or 30 milligrams for the treatment of central precocious puberty. J Clin Endocrinol Metab. 2012 May; 97(5):1572-80. PMID: 22344198.
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    31. Taboada M, Santen R, Lima J, Hossain J, Singh R, Klein KO, Mauras N. Pharmacokinetics and pharmacodynamics of oral and transdermal 17? estradiol in girls with Turner syndrome. J Clin Endocrinol Metab. 2011 Nov; 96(11):3502-10. PMID: 21880799.
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    32. Cohen D, Janfaza M, Klein KO. Importance of leuprolide acetate variable dosing for precocious puberty: a range of acceptable suppression. J Pediatr Endocrinol Metab. 2009 Jul; 22(7):629-34. PMID: 19774844.
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    33. Mericq V, Lammoglia JJ, Unanue N, Villaroel C, Hern?ndez MI, Avila A, I?iguez G, Klein KO. Comparison of three doses of leuprolide acetate in the treatment of central precocious puberty: preliminary results. Clin Endocrinol (Oxf). 2009 Nov; 71(5):686-90. PMID: 19302581.
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    34. Mauras N, Gonzalez de Pijem L, Hsiang HY, Desrosiers P, Rapaport R, Schwartz ID, Klein KO, Singh RJ, Miyamoto A, Bishop K. Anastrozole increases predicted adult height of short adolescent males treated with growth hormone: a randomized, placebo-controlled, multicenter trial for one to three years. J Clin Endocrinol Metab. 2008 Mar; 93(3):823-31. PMID: 18165285.
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    35. Kunz GJ, Sherman TI, Klein KO. Luteinizing hormone (LH) and estradiol suppression and growth in girls with central precocious puberty: is more suppression better? Are pre-injection LH levels useful in monitoring treatment? J Pediatr Endocrinol Metab. 2007 Nov; 20(11):1189-98. PMID: 18183790.
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    36. Janfaza M, Sherman TI, Larmore KA, Brown-Dawson J, Klein KO. Estradiol levels and secretory dynamics in normal girls and boys as determined by an ultrasensitive bioassay: a 10 year experience. J Pediatr Endocrinol Metab. 2006 Jul; 19(7):901-9. PMID: 16995570.
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    37. Badaru A, Wilson DM, Bachrach LK, Fechner P, Gandrud LM, Durham E, Wintergerst K, Chi C, Klein KO, Neely EK. Sequential comparisons of one-month and three-month depot leuprolide regimens in central precocious puberty. J Clin Endocrinol Metab. 2006 May; 91(5):1862-7. PMID: 16449344.
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    38. Mauras N, Welch S, Rini A, Klein KO. An open label 12-month pilot trial on the effects of the aromatase inhibitor anastrozole in growth hormone (GH)-treated GH deficient adolescent boys. J Pediatr Endocrinol Metab. 2004 Dec; 17(12):1597-606. PMID: 15645693.
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    39. Kunz GJ, Klein KO, Clemons RD, Gottschalk ME, Jones KL. Virilization of young children after topical androgen use by their parents. Pediatrics. 2004 Jul; 114(1):282-4. PMID: 15231947.
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    40. Wilson CA, Heinrichs C, Larmore KA, Craen M, Brown-Dawson J, Shaywitz S, Ross J, Klein KO. Estradiol levels in girls with Turner's syndrome compared to normal prepubertal girls as determined by an ultrasensitive assay. J Pediatr Endocrinol Metab. 2003 Jan; 16(1):91-6. PMID: 12585345.
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    41. Larmore KA, O'Connor D, Sherman TI, Funanage VL, Hassink SG, Klein KO. Leptin and estradiol as related to change in pubertal status and body weight. Med Sci Monit. 2002 Mar; 8(3):CR206-10. PMID: 11889458.
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