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A study of mirabegron in young children with neurogenic detrusor overactivity

Mirabegron in Young Children Study | Astellas Clinical Trials

A study to learn how [14C]ASP0367 is processed by the body in healthy men

14C ASP0367 In Males Study | Astellas Clinical Trials

A Study of Gilteritinib (ASP2215) Combined with Chemotherapy in Children, Adolescents and Young Adults with FMS-like Tyrosine Kinase 3 (FLT3)/Internal Tandem Duplication (ITD) Positive Relapsed or Refractory Acute Myeloid Leukemia (AML)

Gilteritnib and Chemotherapy Study | Astellas Clinical Trials

A study to find the best dose of ASP5354 to show lymph nodes in people with breast cancer or melanoma during surgery

ASP5354 to Show Lymph Nodes Study | Astellas Clinical Trials

A Study of Intravesical Enfortumab Vedotin For Treatment of Patients With Non-muscle Invasive Bladder Cancer (NMIBC)

Intravesical Enfortumab Vedotin for Bladder Cancer Study | Astellas Clinical Trials

A study of the safety and tolerability of ASP7317 in adults who are losing their clear, sharp central vision due to geographic atrophy secondary to dry age-related macular degeneration

ASP7317 for Geographic Atrophy Study | Astellas Clinical Trials

A Study to Assess the Antitumor Activity, Safety, Pharmacokinetics and Biomarkers of Zolbetuximab (IMAB362) in Participants with Claudin (CLDN) 18.2 Positive, Metastatic or Advanced Unresectable Gastric and Gastroesophageal Junction (GEJ) Adenocarcinoma

Zolbetuximab Study | Astellas Clinical Trials

A Study of an Intratumoral Oncolytic Virus in Patients with Advanced Metastatic Solid Tumors

Intratumoral Oncolytic Virus Study | Astellas Clinical Trials

A Study to Assess ASP0598 Otic Solution Following Topical Application in the Ear in Subjects with Chronic Tympanic Membrane Perforation (CTMP)

ASP058 Otic Solution Study | Astellas Clinical Trials

A study to evaluate ASP0367 in participants with primary mitochondrial myopathy

ASP0367 Study for Primary Mitochondrial Myopathy | Astellas Clinical Trials

A study of ASP2138 in adults with stomach cancer or pancreatic cancer

ASP2138 Study for Stomach or Pancreatic Cancer | Astellas Clinical Trials

A study about how ASP5354 affects the body in healthy adults and in adults whose kidneys do not work well

ASP5354 for Healthy Adults and Adults with Poor Kidneys | Astellas Clinical Trials

A Study for Subjects With Prostate Cancer Who Previously Participated in an Enzalutamide Clinical Study

Prostate Cancer Study for Previous Participation in Enzalutamide  | Astellas Clinical Trials

A Study to Assess the Efficacy and Safety of IMAB362 in Combination with Nab-Paclitaxel and Gemcitabine (Nab-P + GEM) as First Line Treatment in Subjects with Claudin 18.2 (CLDN18.2) Positive, Metastatic Pancreatic Adenocarcinoma

IMAB362 with Nab P and GEM Study for Pancreatic Cancer  | Astellas Clinical Trials

A study of gilteritinib, venetoclax and azacitidine as a combined treatment for people newly diagnosed with acute myeloid leukemia

Gilteritinib Venetoclax and Azacitidine Study for Acute Myeloid Leukemia | Astellas Clinical Trials

A Study Investigating the Safety, Tolerability and Efficacy of ASP7517 in Subjects with Relapsed/Refractory Acute Myeloid Leukemia (AML) and Relapsed/Refractory Higher Risk Myelodysplastic Syndrome (MDS)

ASP7517 for Acute Myeloid Leukimia | Astellas Clinical Trials

A study to evaluate ASP0367 in participants with reduced maximum oxygen uptake due to poor systemic oxygen extraction

ASP0367 for Reduced Maxiumum Oxygen Uptake Study | Astellas Clinical Trials

A study of ASP3082 in adults with previously treated solid tumors

ASP3082 for Solid Tumors Study | Astellas Clinical Trials

A Study of ASP1570 in adults with locally advanced or metastatic solid tumors

ASP1570 for Advanced or Metastatic Tumors Study | Astellas Clinical Trials

Study of ASP7517 Alone and with Pembrolizumab in Participants with Advanced Solid Tumors Expressing WT1 Antigen

ASP7517 with Pembrolizumab Study | Astellas Clinical Trials

A Safety Surveillance Study in Subjects with Macular Degenerative Disease Treated with Human Embryonic Stem Cell-derived Retinal Pigment Epithelial Cell Therapy

Macular Degenerative Disease Study | Astellas Clinical Trials

A study to evaluate mirabegron in pediatric participants from 5 to less than 18 years of age with overactive bladder (OAB)

Mirabegron Study in Children with OAB Study | Astellas Clinical Trials

Study of ASP0739 Alone and with Pembrolizumab in Advanced Solid Tumors with NY-ESO-1 Expression Participants

ASP0739 with Pembrolizumab Study For Solid Tumors| Astellas Clinical Trials

A study of ASP0367 in people with kidneys that do not work well and in healthy people

ASP0367 Study for Adults with Poor Kidneys | Astellas Clinical Trials

Enfortumab vedotin and pembrolizumab vs. chemotherapy alone in untreated locally advanced or metastatic urothelial cancer

Enfortumab Vedotin and Pembrolizumab vs Chemotherapy Study | Astellas Clinical Trials

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Have questions about or want more information about A Study of LY3471851 in Participants With Gastric Cancer? Contact us by filling out your information below and we’ll respond to you.

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Access to anonymized individual participant level data collected during the study, in addition to study-related supporting documentation, is planned for studies conducted with approved product indications and formulations, as well as compounds terminated during development.  Studies conducted with product indications or formulations that remain active in development are assessed after study completion to determine if Individual Participant Data can be shared.  Conditions and exceptions are described under the Sponsor Specific Details for Astellas on www.clinicalstudydatarequest.com.

Participants received 160-milligrams (mg) enzalutamide administered as four 40-mg capsules, orally once daily for 1 year of treatment period. Following the 1-year treatment period, all participants were followed for 1 additional year. Post the 1-year follow-up period, participants then started the continued follow-up period, in which, participants were followed up every 3 months for these 2 years, after which follow-up was either every 6 months up to 36 months or until the end of study (total duration of follow up in the study was approximately up to 35.9 months).

Participants did not receive any study treatment in this arm but were on continued active surveillance (AS) for 1 year of treatment period. Following the 1-year treatment period, all participants were followed for 1 additional year. Post the 1-year follow up, participants then started the continued follow-up period, in which, participants were followed up every 3 months for these 2 years, after which follow-up was either every 6 months up to 36 months or until the end of study (total duration of follow up in the study was approximately up to 35.9 months).

Redacted CSR Synopsis

Plain Language Summary [English]

Redacted Protocol for CT.gov results

Redacted SAP for CT.gov results

The primary purpose of this study was to compare the time to prostate cancer progression (pathological or therapeutic progression) between patients treated with enzalutamide versus patients undergoing active surveillance.

A Randomized Study of Enzalutamide in Patients with Localized Prostate Cancer Undergoing Active Surveillance

This was a multicenter, randomized, open label exploratory study, conducted in the US and  Canada, evaluating the efficacy and safety of enzalutamide for extension of time to prostate cancer progression (pathological or therapeutic) in patients with clinically localized, histologically proven prostate cancer that is categorized as low risk or intermediate risk and who were under AS.

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Link to results and other applicable study documents on the Astellas Clinical Trials website

Link to plain language summary of the study  on the Trial Results Summaries website

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A Randomized Study of Enzalutamide in Patients with Localized Prostate Cancer Undergoing Active Surveillance (ENACT)

Prostate cancer progression is defined as either therapeutic or pathological progression.

Age Continuous

Sex: Female, Male

Race (NIH/OMB)

Ethnicity (NIH/OMB)

Type of biopsies included: 1. mpMRI (multiparametric magnetic resonance imaging) type, 2. non-mpMRI type.

Type of Biopsy

Study Specific Characteristic

Low risk:no higher than T1c-T2a, prostate specific antigen(PSA)<10,N0,M0(or presumed N0,M0 if computerized tomography[CT]/bone scan not done due to low risk of metastases),gleason score(GS)<=6,eastern cooperative oncology group(ECOG)status<= 2, life expectancy>5years. Intermediate risk:no higher than T2b-T2c, PSA<20, N0, M0(or presumed N0, M0 if CT/bone scan not done), GS<=7(3+4 pattern only),ECOG status<=2, life expectancy>5 years. No primary GS 4 was allowed. T1c-T2a, T2b-T2c:Clinical tumor Stages at initial diagnosis; N0:Clinical lymph node stage at initial diagnosis; M0:Distant metastasis.

Prostate Cancer Risk

The full analysis set (FAS) consisted of all participants who were randomized.

Time to cancer prostate progression (pathological or therapeutic): time (in months) from date of randomization until the date of cancer progression (pathological or therapeutic). Pathological progression: increase in primary or secondary Gleason pattern by greater than or equal (>=) 1 or higher proportion of cancer positive cores (>=15 percent [%] increase). Therapeutic progression: earliest occurrence of primary therapy for prostate cancer (prostatectomy/radiation/focal therapy/systemic therapy). Medians and 95% CIs were calculated with the Kaplan-Meier (KM) method. Participants with no cancer progression at the time of study completion, discontinuation or death were censored at the last assessment date. Participants switching therapy during the study were censored at the time of the initial therapy switch, and participants discontinuing therapy were censored at the time of study discontinuation.

Time to Prostate Cancer progression

Serious Adverse Events (SAEs)

non-SAEs

An AE: any untoward medical occurrence in a participant administered study drug or who underwent study procedures and did not necessarily had a causal relationship with treatment. An abnormality identified during a medical test: an AE only if the abnormality induced clinical signs or symptoms, required active intervention, required interruption, or discontinuation of study medication, or was clinically significant in the opinion of investigator. An AE: serious if it resulted in any of the following outcomes: Death, was life-threatening, Persistent or significant disability/incapacity or substantial disruption of the ability to conduct normal life functions, Congenital anomaly, or birth defect, Inpatient hospitalization or prolongation of hospitalization, Other medically important event. Drug-related AEs: assessed by investigator as AEs whose relationship to study drugs could not be ruled out.

The safety analysis set (SAF) consisted of all participants who enrolled in the study and were randomized to receive study drug.

Number of Participants With Adverse Events (AEs)

At the end of month 12

At the end of month 24

Percentage of Participants who reported negative biopsies for cancer were reported.

FAS population with available data at each time point.

Percentage of Participants Reported Negative Biopsies for Cancer

Change at month 12

Change at month 24

Percent positive cores were calculated using the number of systemically sampled prostate regions and any targeted regions with at least 1 positive core divided by the total number of systematically sampled regions and targeted regions. This implied that despite the number of samples within a given systematic or targeted region, any positive core indicated that region as positive.

Change From Baseline in Percent of Cancer Positive Cores at Month 12 and 24

Time to PSA progression was defined as time in months from the date of randomization or first dose enzalutamide untill date of PSA progression (secondary rise in serum PSA >=25% above baseline or >=25% above nadir or absolute increase >= 2 nanogram per mililiter [ng/mL]). Participants with no PSA progression at the time of trial completion, discontinuation or death were censored at the last assessment date. Additionally, participants switching therapy during the study were censored at the time of the initial therapy switch, and participants discontinuing therapy were censored at the time of study discontinuation. Medians and 95% CIs were calculated with the KM method.

Time to Prostate-specific Antigen (PSA) Progression

At the end of study

Percentage of participants with secondary rise in serum PSA > 25% baseline or > 25% above nadir or absolute increase >2 ng/mL were reported in this measure.

Percentage of Participants With Secondary Rise in Serum PSA

Change at month 3

Change at month 6

Change at month 18

The BFI is a screening tool designed to assess the severity and impact of fatigue on daily functioning of participants with cancer during the 24 hours. There are 9 items on the scale. The first three questions ask participants to rate their fatigues on a scale from 0 (no fatigue) - 10 (as bad as you can imagine), with higher scores indicating worse outcome. The remaining six questions ask participants to rate how much fatigue has interfered with their daily activities on a scale from 0 (Does not interfere) to 10 (Completely interferes). A composite fatigue score was obtained by averaging all the items on the BFI, ranged between 0 to 10, with a higher BFI fatigue score indicating worse outcome. The composite BFI score was calculated only if at least 5 of the 9 items were answered.

Change from Baseline in Brief Fatigue Inventory (BFI) Questionnaire Composite Scores to Months 3, 6, 12, 18 and 24

SF-12 is a questionnaire that measures overall health related quality of life using 12 questions.  The questions are then scored and weighted into 2 subscales, physical health and mental health. Each yields scores from 0 (representing the worst possible debilitation) to 100 (representing no reduction in quality of life). Scores are transformed and ranges between 0 to 100; higher score indicates improvement.

Change From Baseline in 12-Item Short Form Survey (SF-12) Questionnaire Composite Score to Months 6, 12, 18, 24 - Mental Component Summary

SF-12 is a questionnaire that measures overall health related quality of life using 12 questions. The questions are then scored and weighted into 2 subscales, physical health and mental health. Each yields scores from 0 (representing the worst possible debilitation) to 100 (representing no reduction in quality of life). Scores are transformed and ranges between 0 to 100; higher score indicates improvement.

Change From Baseline in SF-12 Questionnaire Composite Score to Months 6, 12, 18, 24 - Physical Component Summary

The EPIC Hormonal Assessment was a questionnaire used to measure quality of life (QoL) issues in participants with prostate cancer. There were a total of 6 questions related to hormonal function such as hot flashes, breast tenderness, depression, lack of energy, weight fluctuation. The answers ranged from “more than once a day” to “rarely or never” (ranged from 1 to 5, corresponding standardized scores were 100, 75, 50, 25, 0), “no problem” to “big problem" (ranged from 0 to 4, corresponding standardized scores were 100, 75, 50, 25, 0). Score from each answer was converted into standardized score at each visit. Total score was calculated by taking average of standardized scores. Total score was measured on a scale ranged from 0 (worst) to 100 (best) scale with higher scores representing better hormonal function.

Change from Baseline in The Expanded Prostate Cancer Index Composite (EPIC) Hormonal Assessment  Scores at Months 6, 12, 18 and 24

EPIC Sexual Assessment: a questionnaire to measure QoL issues in participants with prostate cancer, included a total of 9 questions on sexual function as level of sexual desire, ability to have an erection, ability to reach orgasm, quality and frequency of erections, frequency of sexual intercourse. Answers ranged from “very poor” to “very good,”(ranged from 1 - 5, corresponding standardized scores:0, 25, 50, 75, 100), “none” to “enough”(ranged from 1 - 4, corresponding standardized scores:0, 33, 67, 100), “no problem” to “big problem”(ranged from 0 - 4, corresponding standardized scores:100, 75, 50, 25, 0), and “never” to “daily”(ranged from 1 - 5, corresponding standardized scores:100, 75, 50, 25, 0). Scores from each answer was converted into standardized score at each visit. Total score = calculated by taking average of standardized scores. Total score was measured on a scale ranged from 0 (worst) to 100 (best), higher scores = better sexual function and satisfaction.

Change from Baseline in EPIC Sexual Assessment Scores at Months 6, 12, 18 and 24

EPIC urinary assessment: a questionnaire to measure QoL issues in participants with prostate cancer, included a total of 7 questions on urinary function as leaking urine, blood in urine, pain/burning on urination, urinary control and frequency. Answers ranged from “more than once a day” to “rarely or never”(scores from 1 - 5,corresponding standardized scores[CSS]:0, 25, 50, 75, 100), “no urinary control” to “full urinary control”(scores from 1 - 4,CSS:0, 33, 67, 100), “none” to “3 or more pads per day”(scores from 0 - 3, CSS:100, 67, 33, 0), “no problem” to “big problem”(scores from 0 - 4, CSS:100, 75, 50, 25, 0), and “no problem” to “big problem”(scores from 1 - 5, corresponding standardized score:100, 75, 50, 25, 0). Score from each answer was converted into a corresponding standardized score at each visit. Total score was calculated by taking average of standardized scores. Total score ranged from 0(worst) to 100(best), higher scores = better urinary function.

Change from Baseline in EPIC Urinary Assessment Scores at Month 6, 12, 18 and 24

The MAX-PC was a questionnaire used to assess participants’ feelings about prostate cancer and PSA tests. There were a total of 18 questions related to understanding how participants cope with aspects of their treatment and medical tests frequently involved in their care; questions such as strong feelings about prostate cancer, scared of PSA tests, trouble sleeping due to thoughts of prostate cancer, unable to plan for the future due to prostate cancer, fear of cancer getting worse. The answers range from “not at all” to “often” and “strongly disagree” to “strongly agree. Total score ranged from 0-54, an increase in the score indicates a worsened anxiety level.

Change From Baseline in Memorial Anxiety Scale for Prostate Cancer (MAX-PC) Scores at Months 6, 12, 18 and 24

Overall Study

Randomization was stratified according to prostate cancer risk (low and intermediate) and type of biopsy performed (mpMRI-targeted and non-mpMRI-targeted). Out of 310 participants who were screened, 83 participants were considered screen failures.

Clinical Trial Disclosure

Secondary rise in serum PSA>25% of baseline or >25% above nadir or absolute increase > 2ng/mL

Serum PSA>25% baseline or >25% above nadir or absolute increase > 2ng/mL