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Dive into the research topics where Chinedu Mmeje is active.

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Featured researches published by Chinedu Mmeje.


Journal of Clinical Oncology | 2011

Robotic radical cystectomy: Medium-term oncologic follow-up.

Chinedu Mmeje; Rafael Nunez-Nateras; Raj S. Pruthi; Matthew E. Nielsen; Eric Wallen; M. Humphreys; Erik P. Castle

288 Background: We report our experience with robot assisted radical cystectomy (RARC) with regard to medium-term (at least 2 year) oncologic outcomes. Methods: A total of 275 patients have undergone RARC and urinary diversion at two institutions for invasive bladder cancer between 2005-present. We performed a retrospective analysis of the 139 patients who underwent RARC with a minimum of 2 years follow-up. Medium term oncologic outcomes including recurrence rates, time to recurrence, recurrence free survival (RFS), disease specific survival (DSS) were analyzed. Follow-up was measured from time of surgery to time of most recent clinical follow-up. Results: This cohort of patients consisted of 108 men (78%) and 31 women (22%) at a mean age of 67.3 years (range 45-86 years). Sixty-one (44%) patients had ≤ pT2 disease, 38 (27%) pT3/T4 disease, and 40 (29%) N+ disease. The mean number of lymph nodes removed was 18 (range 3-41). The average clinical follow up in this case series was nearly 3 years with a mean ...


Archive | 2016

Advances in Prostate Cancer Diagnosis: Triggers for Prostate Biopsy

John W. Davis; Chinedu Mmeje

In the early years of screening for prostate cancer with serum PSA, absolute cutoffs were typically utilized such as greater than 4.0 ng/mL or even 2.5 ng/mL. A biopsy of the prostate would commonly be recommended in a man with greater than 10-year life expectancy who had a confirmed elevation above such a threshold or in the presence of an abnormal digital rectal examination. The unmet need, however, is to be more selective in recommending a prostate biopsy, due to the risk of complications and the high rate of false-positive PSAs. More recently, various clinical nomograms can be used to refine selection. In addition, clinicians can now utilize various advanced serum biomarkers that have enhanced specificity—especially for the patient with a rising PSA with prior negative biopsy. In this chapter, we will focus on the biomarkers PCA3, Prostate Health Index, and 4 K score to illustrate key concepts in biomarker develop‐ ment and clinical utility.


The Journal of Urology | 2011

1600 ONCOLOGIC OUTCOMES FOR NODE-POSITIVE PATIENTS UNDERGOING ROBOTIC RADICAL CYSTECTOMY

Chinedu Mmeje; Rafael N. Nunez; Raj S. Pruthi; Matthew E. Nielsen; Eric Wallen; Angela Smith; Mitchell R. Humphreys; Erik P. Castle

290 Background: Previous studies have shown robot assisted radical cystectomy (RARC) to have equivalent perioperative outcomes to open radical cystectomy. There are few reports that have examined the oncologic results of RARC specifically with respect to node-positive patients. We report the outcomes of node-positive patients who have undergone RARC with medium-term (at least 1 year) follow-up. METHODS A total of 275 patients underwent RARC at two institutions for invasive bladder cancer between 2005-present. We examined the 50 patients with node-positive disease that had a minimum of one year follow-up. Oncologic outcomes, recurrence free survival (RFS), and disease specific survival (DSS) were analyzed and compared to the open literature. RESULTS Mean clinical follow up in this case series was 29 months (range 12-64 months). The mean number of lymph nodes removed was 18 (range 5-35), and mean number of positive LNs was 3.1 (range 1-12). Overall rate of LN positivity was 26%. Mean LN density was 18%. Seventeen (34%) patients had ≤ pT2 disease and 33 (66%) pT3/T4 disease. At this follow-up, 29 patients have recurred, 21 patients died of disease, giving a RFS and DSS of 42% and 58%, respectively. Mean (median) time to recurrence was 10.2 months (9 months). A total of 60% of patients received peri-operative chemotherapy in this cohort. These findings are consistent with prior reports of such oncologic outcomes in node-positive patients in open series. CONCLUSIONS The oncologic follow-up of patients undergoing RARC with LN positive disease appears to have acceptable outcomes during medium term (mean 29 months) follow-up. As our follow-up increases, we expect to continue to accurately define the long-term clinical suitability and oncologic success of this procedure in this high-risk population. No significant financial relationships to disclose.


The Journal of Urology | 2011

1590 ROBOTIC RADICAL CYSTECTOMY: MEDIUM-TERM ONCOLOGIC FOLLOW-UP

Chinedu Mmeje; Rafael N. Nunez; Raj S. Pruthi; Matthew E. Nielsen; Eric Wallen; Angela Smith; Mitchell R. Humphreys; Erik P. Castle

288 Background: We report our experience with robot assisted radical cystectomy (RARC) with regard to medium-term (at least 2 year) oncologic outcomes. METHODS A total of 275 patients have undergone RARC and urinary diversion at two institutions for invasive bladder cancer between 2005-present. We performed a retrospective analysis of the 139 patients who underwent RARC with a minimum of 2 years follow-up. Medium term oncologic outcomes including recurrence rates, time to recurrence, recurrence free survival (RFS), disease specific survival (DSS) were analyzed. Follow-up was measured from time of surgery to time of most recent clinical follow-up. RESULTS This cohort of patients consisted of 108 men (78%) and 31 women (22%) at a mean age of 67.3 years (range 45-86 years). Sixty-one (44%) patients had ≤ pT2 disease, 38 (27%) pT3/T4 disease, and 40 (29%) N+ disease. The mean number of lymph nodes removed was 18 (range 3-41). The average clinical follow up in this case series was nearly 3 years with a mean of 35.9 months (range 24-64 months). At this follow-up, 39 patients have recurred, 27 patients died of disease, and 5 patients died of other causes giving an overall RFS, DSS, and OS rates of 80%, 71%, and 68%, respectively. The mean (median) time to recurrence was 12.3 months (10 months). These findings are consistent with prior reports of the oncologic outcomes for open radical cystectomy. CONCLUSIONS The oncologic follow-up of patients undergoing RARC appears to be favorable with acceptable outcomes in the medium-term (mean - 3 years). As our follow-up increases, we should expect to truly define the long-term clinical appropriateness and oncologic success of this procedure. No significant financial relationships to disclose.


Journal of Clinical Oncology | 2011

Oncologic outcomes for node-positive patients undergoing robotic radical cystectomy.

Chinedu Mmeje; Rafael Nunez-Nateras; Raj S. Pruthi; Matthew E. Nielsen; Eric Wallen; M. Humphreys; Erik P. Castle

290 Background: Previous studies have shown robot assisted radical cystectomy (RARC) to have equivalent perioperative outcomes to open radical cystectomy. There are few reports that have examined the oncologic results of RARC specifically with respect to node-positive patients. We report the outcomes of node-positive patients who have undergone RARC with medium-term (at least 1 year) follow-up. Methods: A total of 275 patients underwent RARC at two institutions for invasive bladder cancer between 2005-present. We examined the 50 patients with node-positive disease that had a minimum of one year follow-up. Oncologic outcomes, recurrence free survival (RFS), and disease specific survival (DSS) were analyzed and compared to the open literature. Results: Mean clinical follow up in this case series was 29 months (range 12–64 months). The mean number of lymph nodes removed was 18 (range 5–35), and mean number of positive LNs was 3.1 (range 1–12). Overall rate of LN positivity was 26%. Mean LN density was 18%. S...


Cancer Research | 2018

Abstract 3689: Identification of candidate therapeutic targets in BCG unresponsive bladder cancer- inflammatory subtypes of BCG unresponsive bladder cancer

Woonyoung Choi; Roger Li; Chinedu Mmeje; I-Ling Lee; Shanna Pretzsch; Jolanta Bondaruk; Max Kates; Trinity J. Bivalacqua; Bogdan Czerniak; Ashish M. Kamat; Colin P. Dinney; Peter McL. Black; David J. McConkey


The Journal of Urology | 2016

MP45-02 CDODA-ME DECREASES SPECIFICITY PROTEIN TRANSCRIPTION FACTORS AND INDUCES APOPTOSIS IN BLADDER CANCER CELLS THROUGH INDUCTION OF REACTIVE OXYGEN SPECIES

Hisashi Takeuchi; Rikiya Taoka; Goodwin G. Jinesh; Chinedu Mmeje; Stephen Safe; Teiichiro Aoyagi; Masaaki Tachibana; Ashish M. Kamat


The Journal of Urology | 2016

MP83-06 VARIANTS IN THE INFLAMMATORY GENE PATHWAY ARE PREDICTIVE OF RECURRENCE AND PROGRESSION IN PATIENTS WHO RECEIVED BACILLUS OF CALMETTE AND GUÉRIN (BCG) FOR NON-MUSCLE INVASIVE BLADDER CANCER

Stephen E. Williams; Ashish M. Kamat; Chinedu Mmeje; Edwin E. Morales; Yuanqing Ye; Maosheng Huang; David S. Wang; Colin P. Dinney; Xifeng Wu


The Journal of Urology | 2016

MP49-04 THE UTILITY OF NEUTROPHIL-TO-LYMPHOCYTE RATIO IN DETERMINING SURVIVAL OUTCOMES IN PATIENTS TREATED WITH NEOADJUVANT CHEMOTHERAPY AND RADICAL CYSTECTOMY FOR HIGH-RISK BLADDER CANCER

Austen D. Slade; Chinedu Mmeje; Rebecca Slack; Jay B. Shah


Journal of Clinical Oncology | 2016

The utility of neutrophil-to-lymphocyte ratio in determining survival outcomes in patients treated with neoadjuvant chemotherapy and radical cystectomy for high-risk bladder cancer.

Chinedu Mmeje; Austen D. Slade; Rebecca Slack; Neema Navai; Jianjun Gao; Arlene O. Siefker-Radtke; Ashish M. Kamat; Colin P. Dinney; Jay B. Shah

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Ashish M. Kamat

University of Texas MD Anderson Cancer Center

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Eric Wallen

University of North Carolina at Chapel Hill

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Matthew E. Nielsen

University of North Carolina at Chapel Hill

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Raj S. Pruthi

University of North Carolina at Chapel Hill

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Colin P. Dinney

University of Texas MD Anderson Cancer Center

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Jay B. Shah

University of Texas MD Anderson Cancer Center

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Arlene O. Siefker-Radtke

University of Texas MD Anderson Cancer Center

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Jianjun Gao

University of Texas MD Anderson Cancer Center

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