The GOLIATH Study ..

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Presentation transcript:

The GOLIATH Study .

The GOLIATH Study1,2 Prospective, randomized multicenter controlled trial 29 centers, 9 European countries First randomized controlled trial powered to compare the safety and efficacy of the 180W GreenLight XPS™ Laser Therapy System with transurethral resection of the prostate (TURP) PRIMARY OBJECTIVES: SECONDARY OBJECTIVES: Non-inferiority of 180W GreenLight XPS System compared with TURP International Prostate Symptom Score (IPSS) at 6 months Maximum flow rate (Qmax) at 6 months Proportion of patients who are complication free through 180 days Length of catheterization Length of hospitalization Time until stable health Post-void residual urine volume (PVR) Prostate volume (PV) Prostatic-specific antigen (PSA) Speaker Notes: While the GOLIATH study protocol defined IPSS as the primary endpoint, the study investigated whether the GreenLight XPS System was non-inferior to TURP with respect to IPSS, Qmax and proportion of patients free from complications at 180 days.  Because each of these achieved statistical significance in the power calculations they are also reported as primary objectives of the study. Published tables and charts are open-access and can be downloaded from the journal website: http://www.europeanurology.com All surgeons were licensed urologists trained and experienced with TURP The GreenLight XPS System experience varied. However, a standardized treatment protocol was used and surgical technique was assessed prior to randomization Study Population (values presented published in 6 month manuscript) Variable GreenLight TURP XPS System (n=136) (n=133) p value Age, years 65.9 (6.8) 65.4 (6.6) 0.519 5-ARI up to surgery 36 (26.9%), n=134 45 (34.6%), n=130 0.184 Charlson comorbidity index 0.4 (0.6) 0.2 (0.5) 0.024 BPH duration, years 6.6 (6.2), n=135 5.0 (4.6) 0.018 IPSS 21.2 (5.9) 21.7 (6.4), n=132 0.507 Qmax, ml/sec 9.5 (3.0), n=121 9.9 (3.5), n=125 0.266 PVR, ml 110.1 (88.5), n=131 109.8 (103.9), n=128 0.976 PSA, ng/ml 2.7 (2.1) 2.6 (2.1) 0.800 PV, ml 48.6 (19.2) 46.2 (19.1) 0.301 Values: mean (SD); p value = statistical difference between groups; p value of <0.05 indicates statistically significant difference between treatment groups. There were no significant differences in the baseline characteristics of the patients in the two treatment arms with the exception that: Patients in the GreenLight XPS System arm had a significantly higher comorbidity score and longer duration of BPH.

Primary Efficacy Results Speaker Notes: IPSS: The GreenLight XPS System was equivalent to TURP A consistent and comparable improvement in IPSS was observed over time in both treatment arms The GreenLight XPS System was equivalent (with a margin of 3) to TURP at reducing BPH symptoms at 6 months The 12 month results show that IPSS results are maintained Qmax: The GreenLight XPS System was equivalent to TURP A consistent and comparable improvement in Qmax (per a margin of 5) was observed over time in both treatment arms Mean maximum flow rates were equivalent for patients treated with the GreenLight XPS System and TURP at 6 months The 12 month results show that Qmax results are maintained

Primary Safety and PV Results Primary Safety Results: GreenLight XPS System was Equivalent to TURP PV at 6 and 12 Months: Comparable Prostate Size Reduction Speaker Notes: Primary Safety Results: The GreenLight XPS System was equivalent to TURP The proportion of patients who were complication-free during the first 180 days was comparable between the GreenLight XPS System and TURP and continued to be comparable at 12 months The criteria for non-inferiority of the GreenLight XPS System was met at 6 months, p=0.019. Difference (95% CI): 4.1% (-4.5% to 12.7%) The results of the per protocol and modified ITT analyses were identical PV at 6 and 12 Months: Comparable Prostate Size Reduction Substantial reduction over time seen in both arms Comparable reduction at 6 months, p=0.079 and at 12 months, p=0.574 In the TURP group, a mean of 19.1 g of tissue was resected (41.4%) during procedure (reported at 6 months) A similar prostate size reduction was achieved in the GreenLight XPS System arm

Recovery Parameters Catheterization Stable Health Hospital Stay Speaker Notes: (Data published in 6 month manuscript.) Length of catheterization was significantly shorter with the GreenLight XPS System than with TURP Length of catheterization: 22 hours versus 46.7 hours, p <0.001 Time to stable health status was significantly shorter with the GreenLight XPS System than with TURP Time until stable health: 26 hours versus 52.8 hours, p <0.001 Time until stable health defined as: Time from entering the recovery room until the earlier of discharge from the medical facility or the first successful voiding trial without an ongoing treatment-related AE. Length of hospital stay was significantly shorter with the GreenLight XPS System than with TURP Length of hospital stay: 49.3 hours versus 78.2 hours, p <0.001 Median is shown for length of catheterization, time to stable health status and length of hospital stay due to outliers. The mean is average of a set of numbers where the median is the exact middle of a set of values. The mean is best used when there is a normal distribution in the data-set; the median is typically used when the data-set is skewed (contains outliers). All results given as median.

Adverse Events No significant difference could be detected between the GreenLight XPS System and TURP with regards to any adverse events (AE) (p=0.330) Storage symptoms (dysuria/irritative pain/discomfort) were the most commonly observed Grade I events in 18.4% (GreenLight XPS System) and 18.0% (TURP) patients Urinary tract infections (defined by intention to treat without microbiological confirmation documented) were the most commonly observed Grade II events in 16.2% after the GreenLight XPS procedure and 9.0% after TURP (p=0.098) Statistically significant difference in early AE (48 hours to 30 days) with 12 complications in the TURP group and zero in the GreenLight XPS procedure group (p=<0.001) At 12 months, ongoing self-reported urinary leakage of any degree was observed in 4 (2.9%) after the GreenLight XPS procedure and 4 (3.0%) after TURP; this has been easily tolerated without intervention

Reinterventions Surgical reinterventions during the 12 month period for an AE arising at any time was seen in 16 (11.8%) patients after the GreenLight XPS procedure and 20 (15.0%) patients after TURP SPEAKER NOTES: 6 TURP patients compared to 3 GreenLight XPS System patients required reintervention for bleeding. 6 GreenLight XPS System vs. 3 TURP patients required reintervention for bladder neck obstruction. The differences were not statistically significant. Re-intervention for urethral stricture for men occurred in 5 TURP and 2 GreenLight XPS System patients. 3 GreenLight XPS System patients vs. 1 TURP patient required reoperation for obstruction secondary to residual tissue. Reintervention due to urinary frequency occurred in 1 TURP patient (0 GreenLight XPS System patients). 4 TURP vs. 2 GreenLight XPS System patients underwent reintervention procedures due to urinary retention.

Patient Questionnaires Patients’ overall satisfaction with the GreenLight XPS procedure was high, with over 94% of men willing to undergo the treatment again and recommend it to a friend SPEAKER NOTES: Data from the patient reported outcome measures SF-36 Physical Health Summary SF-36 Mental Health Summary IIEF-5 (International Index of Erectile Function-5) Values reported as mean

Conclusions First randomized controlled trial powered to compare safety and efficacy of the GreenLight XPS Laser System and TURP demonstrated TURP resulted in 5 times more surgical interventions to resolve post-operative bleeding than GreenLight XPS procedure Comparable results in terms of IPSS, Qmax, and complication-free after 12 months Patients treated with the GreenLight XPS System had a significantly shorter median length of catheterization, time until stable health, and hospitalization compared with TURP Overall portion of patients free from any AE was comparable between the GreenLight XPS procedure and TURP In the 48 hour to 30 day period, there were 0 AE in the GreenLight XPS System arm compared to 12 in the TURP arm (p<0.001) Comparable storage symptoms (dysuric or irritative symptoms) between treatment arms At 12 months, self reported urinary leakage of any degree was reported in 2.9% of the GreenLight XPS System procedure patients and 3% of TURP patients Overall post-operative re-intervention rates were not significantly different between treatment arms

Brief Summary The GreenLight™ laser system is intended for incision/excision, vaporization, ablation, hemostasis and coagulation of soft tissue, including photoselective vaporization of the prostate for benign prostatic hyperplasia (BPH). The laser system is contraindicated for patients who: are contraindicated for surgery, contraindicated where appropriate anesthesia is contraindicated by patient history, have calcified tissue, require hemostasis in >2mm vessels, have uncontrolled bleeding disorders, have prostate cancer, have acute urinary tract infection (UTI) or severe urethral stricture. Possible risks and complications include, but are not limited to, irritative symptoms (dysuria, urgency, frequency), retrograde ejaculation, urinary incontinence, erectile dysfunction, hematuria - gross, UTI, bladder neck contracture/outlet obstruct, urinary retention, perforation - prostate, urethral stricture. Prior to using these devices, please review the Operator’s Manual and any accompanying instructions for use for a complete listing of indications, contraindications, warnings, precautions and potential adverse events. Bachmann A, Tubaro A, Barber N, et al., 180-W XPS GreenLight Laser Vaporization Versus Transurethral Resection of the Prostate for the Treatment of Benign Prostatic Obstruction: 6-Month Safety and Efficacy Results of a European Multicentre Randomized Trial—The GOLIATH Study; European Urology, 2014 May;65(5):931-42 Bachmann A, Tubaro A, Barber N, et al., An European Multicenter Randomized Noninferiority Trial Comparing 180-W GreenLight-XPS Laser Vaporization and Transurethral Resection of the Prostate for the Treatment of Benign Prostatic Obstruction: 12 Month Results of the GOLIATH-Study; Journal of Urology, 2014, 2014 Sep 11. pii: S0022-5347(14)04377-8. doi: 10.1016/j.juro.2014.09.001. Rx Only ™ The denoted marks are trademarks or registered trademarks of American Medical Systems, Inc. © 2014 American Medical Systems, Inc. All Rights Reserved. Minnetonka, MN 55343 AMSUS/GL-00911b(2)/September 2014 www.AmericanMedicalSystems.com 1-800-328-3881 U.S. and International Use