Study Results
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Basic Information
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COMPLETED
44 participants
OBSERVATIONAL
2006-09-01
2013-09-30
Brief Summary
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Detailed Description
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MicroRNAs (miRNAs) are single-strand RNAs comprising approximately 21-23 nucleotides. miRNAs regulate gene expression through the inhibition of posttranscriptional events and, in some cases, induce the degradation of their target messenger RNA. In cancer, miRNAs can function as both oncogenes and/or as tumor suppressor genes depending on the function of their target genes.
Formalin-fixed paraffin-embedded (FFPE) tissue blocks from CC patients diagnosed between January 2006 and December 2013 at the Department of Oncologic Gynecology of the National Cancer Institute (Mexico City) were analyzed with the intention of selecting those with a confirmed histopathological diagnosis of stages IB1 or IIA1 CC treated with RH and BPL. Total RNA was extracted from 5 (10-µm) sections for selected tissues.For the clinical correlation analysis, the samples were divided into 2 groups: 1 with positive occult lymph node metastasis pathology and 1 without lymph node metastasis pathology. For both groups, patients were matched for age, tumor size and presence of lymphovascular permeation.
The identification of global miRNA profiles was performed using GeneChip miRNA 3.0 Array (Affymetrix, Cat. 902018) following the manufacturer's instructions. the microarray was hybridized and washed using the Affymetrix Fluidics Station 450 and scanned with the Affymetrix GeneChip Scanner 3000. After processing the images, the raw data were processed. To obtain the miRNA profile, the processed samples were divided into 2 groups, samples with lymph node metastasis and samples without lymph node metastasis. Differentially expressed miRNAs were identified using a cutoff value of p \<0.01 and a fold change (FC) of 1.5. miRNAs that met these criteria were classified as over-expressed or under-expressed.
Conditions
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Study Design
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OTHER
RETROSPECTIVE
Study Groups
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Positive metastasis
Positive occult lymph node metastasis pathology
No interventions assigned to this group
Negative metastasis
Without lymph node metastasis pathology
No interventions assigned to this group
Eligibility Criteria
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Inclusion Criteria
* Clinical stage IB1 or IIA1 CC
* Treated with radical hysterectomy (RH) with bilateral pelvic lymphadenectomy (BPL)
Exclusion Criteria
* Treatment regimens other than standard treatment
* Poor quality formalin-fixed paraffin-embedded tissue blocks
18 Years
FEMALE
No
Sponsors
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National Institute of Cancerología
OTHER_GOV
Responsible Party
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David Cantu
Chief of clinical trials department
Principal Investigators
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David F Cantú-deLeón, MD, PhD
Role: PRINCIPAL_INVESTIGATOR
National Cancer Institute of Mexico
References
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Thomison J 3rd, Thomas LK, Shroyer KR. Human papillomavirus: molecular and cytologic/histologic aspects related to cervical intraepithelial neoplasia and carcinoma. Hum Pathol. 2008 Feb;39(2):154-66. doi: 10.1016/j.humpath.2007.11.002.
Koh WJ, Greer BE, Abu-Rustum NR, Apte SM, Campos SM, Chan J, Cho KR, Cohn D, Crispens MA, DuPont N, Eifel PJ, Gaffney DK, Giuntoli RL 2nd, Han E, Huh WK, Lurain JR 3rd, Martin L, Morgan MA, Mutch D, Remmenga SW, Reynolds RK, Small W Jr, Teng N, Tillmanns T, Valea FA, McMillian NR, Hughes M; National Comprehensive Cancer Network. Cervical cancer. J Natl Compr Canc Netw. 2013 Mar 1;11(3):320-43. doi: 10.6004/jnccn.2013.0043.
Lea JS, Lin KY. Cervical cancer. Obstet Gynecol Clin North Am. 2012 Jun;39(2):233-53. doi: 10.1016/j.ogc.2012.02.008. Epub 2012 Apr 24.
Delgado G, Bundy B, Zaino R, Sevin BU, Creasman WT, Major F. Prospective surgical-pathological study of disease-free interval in patients with stage IB squamous cell carcinoma of the cervix: a Gynecologic Oncology Group study. Gynecol Oncol. 1990 Sep;38(3):352-7. doi: 10.1016/0090-8258(90)90072-s.
Suprasert P, Charoenkwan K, Khunamornpong S. Pelvic node removal and disease-free survival in cervical cancer patients treated with radical hysterectomy and pelvic lymphadenectomy. Int J Gynaecol Obstet. 2012 Jan;116(1):43-6. doi: 10.1016/j.ijgo.2011.08.001. Epub 2011 Oct 5.
Togami S, Kamio M, Yanazume S, Yoshinaga M, Douchi T. Can pelvic lymphadenectomy be omitted in stage IA2 to IIB uterine cervical cancer? Int J Gynecol Cancer. 2014 Jul;24(6):1072-6. doi: 10.1097/IGC.0000000000000163.
Tanaka Y, Sawada S, Murata T. Relationship between lymph node metastases and prognosis in patients irradiated postoperatively for carcinoma of the uterine cervix. Acta Radiol Oncol. 1984;23(6):455-9. doi: 10.3109/02841868409136048.
Bartel DP. MicroRNAs: genomics, biogenesis, mechanism, and function. Cell. 2004 Jan 23;116(2):281-97. doi: 10.1016/s0092-8674(04)00045-5.
Pedroza-Torres A, Lopez-Urrutia E, Garcia-Castillo V, Jacobo-Herrera N, Herrera LA, Peralta-Zaragoza O, Lopez-Camarillo C, De Leon DC, Fernandez-Retana J, Cerna-Cortes JF, Perez-Plasencia C. MicroRNAs in cervical cancer: evidences for a miRNA profile deregulated by HPV and its impact on radio-resistance. Molecules. 2014 May 16;19(5):6263-81. doi: 10.3390/molecules19056263.
Lee JW, Choi CH, Choi JJ, Park YA, Kim SJ, Hwang SY, Kim WY, Kim TJ, Lee JH, Kim BG, Bae DS. Altered MicroRNA expression in cervical carcinomas. Clin Cancer Res. 2008 May 1;14(9):2535-42. doi: 10.1158/1078-0432.CCR-07-1231.
Related Links
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GLOBOCAN 2012 v1.0, Cancer Incidence and Mortality Worldwide: IARC CancerBase. No. 11 \[Internet\]., Lyon, Fr. Int. Agency Res. Cancer. 11 (2013)
Other Identifiers
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Rev/06/15
Identifier Type: -
Identifier Source: org_study_id
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