Bladder-Sparing Trimodality Therapy for Muscle-Invasive Bladder Cancer

Bladder-Sparing Trimodality Therapy for Muscle-Invasive Bladder Cancer Jason A. Efstathiou, MD, DPhil Assistant Professor of Radiation Oncology Massachusetts General Hospital Harvard Medical School

Organ conservation in contemporary oncology Anal carcinoma Breast carcinoma Esophageal carcinoma Laryngeal carcinoma Limb sarcomas Prostate carcinoma

Muscle-invading TCC bladder Bladder removal and reconstruction Bladder conservation Goals: cure patient and optimize survival prevention of pelvic failure and distant metastasis functional urinary reservoir and high QOL Cystectomy Cystectomy alternatives

Radiation Alone with Salvage Cystectomy vs Preop RT and Immediate Cystectomy ( a) SD Cutler, National Cancer Institute, unpublished observations, 1983 5-year survival data from 4 randomized trials comparing preoperative radiation therapy (40-50Gy) with immediate cystectomy to radiation therapy alone (60Gy) with salvage cystectomy for recurrence Study No. of patients 5-year Survival with Pre-op RT and cystectomy % 5-year Survival with RT and salvage cystectomy % Statistical Significance Notes Urologic Cooperative Group, UK 189 39 28 None Danish National Cancer Group 183 29 23 None National Bladder Cancer Group (a) 72 27 40 None MD Anderson Cancer Center 67 45 22 Significant Large T3 tumors included

So what’ s the modern alternative to cystectomy? Trimodality therapy Maximal TURBT Radiation therapy Chemotherapy

XRT (40Gy) + Concomitant Chemotherapy TURBT Consolidation Chemo-radiation (64Gy) +/- adjuvant chemo Radical Cystectomy +/- adjuvant chemo CR Non-CR Cystoscopic response evaluation

3 weeks 3 weeks 3 weeks Importance of early salvage cystectomy XRT (40Gy) + Concomitant Chemotherapy TURBT Consolidation Chemo-radiation (64Gy) Radical cystectomy CR Non-CR Cystoscopic response evaluation Frequent cystoscopy U U U U

Perivesical nodes Bladder Cancer - Lymphatic Pathway of Spread Perivesical LN: 75 % Common iliac nodes:19 % Internal iliac nodes: 15 % External iliac nodes: 65 % Nodal disease is present in 20-40% at diagnosis

Nodal RT fields (40 to 45Gy) are designed to conserve small bowel for urinary diversions should they be needed Small Pelvic Fields by 3-D

Tumor boost fields by 3-D Only partial bladder to high dose (total 65 Gy) Incorporate all TURBT and radiographic info Simulate and treat with empty bladder

Bladder Conservation: Evolution of the MGH and RTOG approach 1986-93 Neoadjuvant chemo Response evaluation 1994-98 Accelerated radiation Adjuvant chemotherapy 1999-2006 Enhanced Radiation sensitization Adjuvant chemotherapy MCVx2 RT + C bidRT +C/5Fu MCV x 3 bidRT+C/ Tax G + C x 4

N = 348 Clinical stages T2-T4a Treated on protocols 1986-2006 Median age 66.3 years (range 27.3–88.6) Median FU for those alive 7.7 years Actuarial endpoints included: OS, DSS Long-term MGH Experience 1986-2006 Efstathiou et al Eur Urol 2011

Long-term MGH Experience 1986-2006 Background Characteristics (n=348) Gender Male 74% Female 26% Clinical Stage T2 54% T3 38% T4a 8% Visibly complete TURBT Yes 65% No 33% Hydronephrosis Yes 17% No 83% Efstathiou et al Eur Urol 2011

Long-term MGH Experience 1986-2006 Outcomes CR rate 72% Overall Survival 5 yrs 52% 10 yrs 35% 15 yrs 22% Disease Specific Survival 5 yrs 64% 10 yrs 59% 15 yrs 57% % undergoing Cystectomy* 29% Immediate (non-CR) 17% Salvage 12% *No patient required cystectomy due to treatment-related toxicity Efstathiou et al Eur Urol 2011

Long-term MGH Experience 1986-2006 Efstathiou et al Eur Urol 2011 64% 59% 80% of those alive at 5 years still have native bladder 57%

Efstathiou et al Eur Urol 2011 Long-term MGH Experience 1986-2006 Influence of Age

In univariate analyses the following were significant: low clinical T stage (HR 0.53, p=0.001) visibly complete TURBT (HR 0.67, p=0.029) lack of hydronephrosis (HR 0.48, p=0.001) CR to induction therapy (HR 0.37, p<0.001) In multivariate analyses the following were significant: low clinical T stage (HR 0.56, p=0.01) CR to induction therapy (HR 0.41, p=<0.001) Long-term MGH Experience 1986-2006 Efstathiou et al Eur Urol 2011

Efstathiou et al Eur Urol 2011 Long-term MGH Experience 1986-2006 Importance of Clinical Stage 61% 41% 43% 27% 28% 16%

Efstathiou et al Eur Urol 2011 Long-term MGH Experience 1986-2006 Importance of Clinical Stage 74% 53% 67% 49% 63% 49%

Long-term MGH Experience 1986-2006 Importance of a Complete Response Efstathiou et al Eur Urol 2011

Long-term MGH Experience 1986-2006 Neoadjuvant chemotherapy Efstathiou et al Eur Urol 2011

Role of Neoadjuvant Chemotherapy RTOG 89-03 trial (n=123) negative (5 year survivals of 49% and 50%) Danish Cancer Group trial (n=113) negative (NCT had 5.6% lower survival) RT subgroup of MRC trial (n=413) trended insignificant in favor of NCT Meta-analysis negative (survival 30.4% vs 28.1%) No Level 1 (Phase III) data indicating cisplatin-based neoadjuvant chemotherapy given before definitive local treatment by RT or RT and concurrent chemotherapy significantly improves survival.

Meta-Analysis of Neoadjuvant Chemotherapy in Invasive Bladder Cancer Phase III series with RADIATION THERAPY ( A total of 526 patients ) European Urology 48: 202-206, 2005 P=0.334

What is the importance of an aggressive TURBT for “Cystectomy Avoidance”? “ The TURBT must be done with the determination to resect all visible tumor. Nothing less will suffice.” NM Heney et al NATURE Rev Clin Oncol 2009

All TURBT TURBT patients complete not complete p value Number 343 227 116 CR rate 72% 79% 57% <0.001 5 year outcomes Overall Survival 52% 57% 43% 0.003 DSS 64% 68% 56% 0.03 % undergoing cystectomy TOTAL 29% 22% 42% <0.001 Immediate (non-CR) 17% 11% 29% Salvage 12% 11% 13% Long-term MGH Experience 1986-2006 The value of complete TURBT Efstathiou et al Eur Urol 2011

Selection is Key Solitary T2 or early T3 tumors < 6 cm No tumor-associated hydronephrosis Tumors allowing a visibly complete TURBT Invasive tumors not associated with extensive carcinoma in situ Adequate renal function to allow cisplatin concurrent with radiation TCC histology Tumor presentations with the highest success rates:

How does bladder preservation by combined modality therapy compare with radical cystectomy ?

Cystectomy versus ChemoRT Retrospective cystectomy series do not report by “intention to treat” Outcome results are confounded by discordance between clinical (TURBT) staging and pathologic (cystectomy) staging Best approach is to compare the results of prospective protocols in which the eligibility is based on clinical staging and all entered patients are reported for outcome Comparing cure rates of modern selective bladder preserving approaches with salvage cystectomy to contemporary cystectomy series is difficult.

Survival after curative therapy Stage Number 5 year OS 10 year OS Cystectomy USC 2001 pT2-4a 633 48% 32% MSKCC 2001 pT2-4a 181 36% 27% SWOG 2003 cT2-3 303 49% - Chemo-RT RTOG 1998 cT2-4a 123 49% - Erlangen 2002 cT2-4 326 45% 29% MGH 2011 cT2-4a 348 52% 35%

Contemporary Co-operative Group Trials in Invasive Bladder Cancer– all in clinically staged patients Group Treatment number 5 yr survival SWOG Cystectomy + 317 47% NCT Italian ** Cystectomy + 206 54% NCT RTOG * TURBT,XRT 123 49% Cisplatin + NCT SWOG * TURBT, XRT+ 25 45% both Cisplatin + 5-FU * All patients were “cystectomy candidates” ** P. Bassi Eur. Urol. 33 : 142, 1999

MRC “SPARE” Bladder Protocol TURBT Gemcitabine and Cisplatin – 3 cycles Cystoscopic assessment of treatment response Incomplete response Complete response Definitive Radiation + Chemo

MRC “SPARE” Bladder Protocol Life and death of spare (selective bladder preservation against radical excision): reflections on why the spare trial closed. Huddart et al BJU Int 2010

Which chemotherapy with radiation?

Role of Concurrent Chemotherapy Cisplatin, Paclitaxel, 5-FU, Mitomycin C, Gemcitabine and tumor hypoxia-reducing drugs The active radiosensitizing drugs include:

Concurrent Chemotherapy + Twice-Daily RT Protocol Induction treatment Patients Complete Response 95-06 TURBT, 5-FU plus 34 67% CP + BID RT 97-06 TURBT, CP + BID RT 52 74% adj MCV 99-06 TURBT, TAX plus 80 81% CP + BID RT adj CP + GEM

University of Erlangen Experience Rodel et al. IJROBP 2002;52:1303-9 n CR RT alone 98 57% RT + carboplatin 69 64% RT + cisplatin 115 81% RT + 5-FU/cis 45 87%

360 patients 2001 – 2008 clinical stage T2-4aNx bladder cancer XRT 55 Gy/20 or 64 Gy/32 RT + MMC & 5-FU GFR > 25 ml/min Median follow-up 49 months Published in abstract form only to date James et al, ASCO & ASTRO 2010 Phase III randomized trial of synchronous chemo-radiotherapy compared to radiotherapy alone in muscle invasive bladder cancer (BC2001 CRUK/01/004)

The Benefit of Radiation in Bladder Preservation 5 year % requiring Treatment %CR survival cystectomy TURBT + M-VAC* 33-54% 58% 66% ( TWO-MODALITY) TURBT + XRT+chemo 64-87% 45%-62% 29-35% ( TRI-MODALITY ) Cystectomy rate is increased by 88-125% without radiation *C. Sternberg, V. Pansadora et al. Cancer 97:1644, 2003

RTOG PROTOCOL 02-33 (Randomized Phase II) (PI: AL Zietman, MD) TURBT randomization bid RT 5FU Cisplatin bid RT Taxol Cisplatin Stage T2 – T4a, No Hydronephrosis Candidate for cystectomy, if necessary Finished accrual 2008 93 patients

RTOG 02-33 Overall survival following chemo-radiation Zietman et al. ASTRO 2010

RTOG PROTOCOL 07-12 (Randomized Phase II) (PI: JJ Coen, MD) TURBT randomization RTOG: bid RT 5FU Cisplatin Michigan: qd RT Gemcitabine Stage T2 – T4a, No Hydronephrosis Candidate for cystectomy, if necessary Started accrual 2008

RTOG PROTOCOL 09-26 (Phase II) (PI: D Dahl, MD) TURBT Full dose RT Concurrent cisplatin Stage T1 G2 or G3, Failed intravesical therapy, Cystectomy next step Started accrual 2010 Cystoscopic surveillance

Personalized Care in the Era of Biomarkers and Molecular Targeted Agents Can biomakers be used to predict outcomes and even select an optimal treatment for subsets of muscle-invading bladder cancer patients, thus benefiting individuals?

Her-2 expression , identified in 57% of patients, is significantly correlated with reduced effectiveness of chemoradiation against the primary tumor (CR rate of 50% vs 81%). RTOG 05-24: Phase I-II study of treatment for non-cystectomy candidates (PI: D Michaelson, MD PhD) Chakravarti et al IJROBP 2005

TURBT---------> Her-2 stain < 3+ --------> XRT + weekly taxol TURBT---------> Her-2 stain 3+ ----------> XRT + weekly taxol + HERCEPTIN RTOG 05-24: Phase I-II study of treatment for non-cystectomy candidates (PI: D Michaelson, MD PhD) 55 of 88 patients accrued

MRE11 Predictive of CSS Following Radical Radiotherapy for Muscle Invasive Bladder Cancer Ionizing radiation creates DNA damage sensed by the MRE11/NBS1/RAD50 (MRN) complex, which initiates cell cycle checkpoints, activates apoptosis and is involved in MRN-mediated DSB repair Reduced tumor MRE11 protein expression is associated with poorer survival following radical radiotherapy for bladder cancer Failure of cell cycle arrest/apoptosis responses may result in radioresistance and reduced local tumor control A. Choudhury, L. Nelson, A. Kiltie et al. Cancer Research 70; September 2010

MRE11 Predictive of CSS Following Radical Radiotherapy for Muscle Invasive Bladder Cancer Radiation cohort Cystectomy cohort Low MRE 11 Patients P<.001 P=.48 P=.02 P=.13 High MRE 11 Patients

Quality of life after chemo-radiation

221 patients, T2-4NX-0M0 bladder cancer, Treated on protocols 1986-2000, median f/u 6.3 years, Urodynamics study, QOL questionnaire 78% have compliant bladders with normal capacity and flow parameters 85% have no urgency or occasional urgency 25% have occasional to moderate bowel control symptoms 50% of men have normal erectile function Zietman, Talcott, Krane et al J Urol 2003 MGH Quality of Life Study

Late Pelvic Toxicity: RTOG Results 157 patients with bladder preservation who survived 2 to 13 years (median follow-up 5.2 years) 22% Grade 1 10% Grade 2 7% Grade 3 (5.7% GU, 1.9% GI) 0% Grade 4 0% Grade 5 Efstathiou et al J Clin Oncol 2009

QoL due to urinary symptoms after TURBT and chemoRT If you were to spend the rest of your life with your urinary condition the way it is now, how would you feel about that? Weiss et al 2005 delighted pleased mostly satisfied mixed – about equally satisfied and dissatisfied mostly dissatisfied unhappy terrible 18.5% 51.7% 17.2% 9.1 % 0.8% 2 % 0.7%

2 comparative cross-sectional studies available: Trento, Italy 1996 Incontinent diversion vs chemo-RT Karolinska, Sweden 2002 Incont. and cont. diversions vs RT vs controls Quality of life after treatment of invasive bladder cancer: Cystectomy or organ-conserving therapy

QOL advantage to chemo-RT: psychologic adjustment physical well-being energy sexual function urinary function QOL equivalence chemo-RT vs surgery: Social functioning Bowel function Quality of life after treatment of invasive bladder cancer: Cystectomy or organ-conserving therapy

Henningsohn et al 2002 Urinary function : RT - 74% little or no urinary symptom distress Sexual function : RT - 38% intercourse previous month Cyst - 13% intercourse previous month Quality of life after treatment of invasive bladder cancer: Cystectomy or organ-conserving therapy

Henningsohn et al 2002 Bowel function : mod or much distress RT 32% Cystectomy 24% Controls 9% Sig NS Quality of life after treatment of invasive bladder cancer: Cystectomy or organ-conserving therapy

Acceptance of chemoradiation used in modern bladder-sparing therapy should not be limited by concerns of high rates of late pelvic toxicity

Morbidity of primary radical cystectomy Donat et al 2009 1142 RCs at MSKCC 1995-2005 Prospectively captured morbidity data Reported complications within 90 days Graded 0-5 on modified Clavien Scale

Morbidity of primary radical cystectomy Donat et al 2009 64% More than 1 complication 13% Grade 3-5 26% Readmissions 2% 90 day mortality Donat et al Eur Urol, 2009

Grade Total <30 days <90 days MSKCC Morbidity of salvage radical cystectomy at the MGH Eswara et al J Urol 2011 (in press) 1 72 39% 53 48% 58 45% 26% 2 55 30% 42 38% 48 38% 62% 3 52 28% 11 10% 18 14% 11% 4 3 2% 2 2% 2 2% 0% 5 2 1% 2 2% 2 2% 2%

Stage T 3 -T 4a with hydronephrosis: Cystectomy Stage T 4a (prostate stromal invasion): Cystectomy Stage T 2 -T 3 : TURBT and concurrent cisplatin plus XRT (QD or BID ) with prompt cystectomy for failure Current Recommendations in Cystectomy Candidates “Off-Protocol”

“ Standard” Selective Bladder Sparing Therapy “Off-Protocol” TURBT as complete as is safely possible XRT to bladder & pelvic lymph nodes to 40Gy with a boost to bladder tumor to 64Gy Cisplatin in weeks 1, 4, and 7 Close cystoscopic surveillance with salvage cystectomy for tumor persistence or for invasive recurrence

“ Standard” Selective Bladder Sparing Therapy “Off-Protocol” For non- cystectomy or non-Cisplatin Candidates TURBT as complete as is safely possible XRT to bladder & pelvic lymph nodes to 40Gy with a boost to bladder tumor to 64Gy in 2 Gy daily fractions Concurrent chemotherapy with Mitomcycin C and 5-FU as in protocol BC2001 Cystoscopic surveillance for tumor persistence or for invasive recurrence for prompt further local therapy

Combined modality therapy achieves a CR and preserves the native bladder in ~ 70% of patients, while offering long-term survival rates comparable to contemporary radical cystectomy series QOL studies have demonstrated that the retained native bladder functions well and long-term toxicity of chemoRT to pelvic organs is relatively low Incidence of cystectomy performed for palliation of treatment-related toxicity has been very low and the morbidity of salvage cystectomy appears comparable to primary cystectomy Closing Thoughts

These results support the acceptance of modern bladder-sparing trimodality therapy for selected patients as a proven alternative to cystectomy The optimal regimen of combined chemoRT, as well as the addition of rational molecular targeted therapy and personalized treatment selection, continues to be investigated Closing Thoughts

The contribution of selective bladder sparing therapy to the quality of life of patients represents a unique opportunity for urologic surgeons, radiation oncologists, and medical oncologists to work hand in hand in a truly multidisciplinary effort Closing Thoughts

Treatment/ Comparison Evidence Level of Evidence Grade of Recommendation RT alone vs 40Gy+Cystectomy 3 of 4 RCTs report similar survival 1b A ChemoRT vs RT alone 2 RCTs report significant improvement in bladder tumor eradication 1b A Neoadjuvant CT with RT or ChemoRT 3 RCTs and 1 meta-analysis report no benefit 1a A ChemoRT preserves good bladder function 3 QOL studies and RTOG protocols report good tolerance 2a B Complete TURBT with ChemoRT 3 reports (1 phase III, 2 phase II) show benefit 2a B Predictive Biomarkers of outcome after RT MRE 11 expression predicts improved CSS (1 study) 2b B Trimodality therapy vs immediate cystectomy Comparison of 3 contemporary series of each report similar 5- and 10-yr survival 3 C

Bladder-Sparing Trimodality Therapy for Muscle-Invasive Bladder Cancer

More Related Content

What's hot (20)

Viewers also liked (8)

Similar to Bladder-Sparing Trimodality Therapy for Muscle-Invasive Bladder Cancer (20)

Recently uploaded (20)

Bladder-Sparing Trimodality Therapy for Muscle-Invasive Bladder Cancer

Editor's Notes