Contemporary use of hormonal therapy in prostate cancer: managing complications and addressing quality-of-life issues

Long-Term Control With Proton Beam Therapy for Recurrent Prostate Cancer in the Right Perineum Following Intensity-Modulated Radiation Therapy: A Case Report

Radiation therapy (RT) is commonly used for the treatment of prostate cancer, with intensity-modulated radiation therapy (IMRT) and proton beam therapy (PBT) being the utilized modalities. This case report outlines the treatment course of a recurrent prostate cancer lesion in the right perineal musculature managed with proton therapy following IMRT. A 64-year-old Japanese man, diagnosed with prostate cancer and categorized as high risk according to the National Comprehensive Cancer Network guidelines, underwent six months of androgen deprivation therapy, which included bicalutamide and degarelix acetate. Six months after completing 78 Gy in 39 fractions of IMRT, the patient reported perineal to anal pain. Laboratory tests showed an elevated serum prostate-specific antigen (PSA) level, and pelvic MRI showed a mass lesion in the right perineal musculature. Consequently, the patient was diagnosed with recurrent prostate cancer. Thereafter, the patient underwent eight cycles of systemic chemotherapy with docetaxel; however, his pain progressively worsened. Subsequently, the treatment was switched to 12 cycles of cabazitaxel, which led to gradual pain relief. The patient received PBT at 60 Gy relative biological effectiveness in 30 fractions for the recurrent lesion. Five years after PBT, pelvic MRI showed no mass lesions in the prostate or surrounding tissues. The PSA levels remained low, less than 0.008 ng/ml, and there were no apparent late complications.

TrueNTH Sexual Recovery Intervention for couples coping with prostate cancer: Randomized controlled trial results

BACKGROUND

Despite significant sexual dysfunction and distress after localized prostate cancer treatment, patients typically receive only physiologic erectile dysfunction management. The authors performed a randomized controlled trial of an online intervention supporting couples' posttreatment recovery of sexual intimacy.

METHODS

Patients treated with surgery, radiation, or combined radiation and androgen deprivation therapy who had partners were recruited and randomized to an online intervention or a control group. The intervention, tailored to treatment type and sexual orientation, comprised 6 modules addressing expectations for sexual and emotional sequelae of treatment, rehabilitation, and guidance toward sexual intimacy recovery. Couples, recruited from 6 sites nationally, completed validated measures at the baseline and 3 and 6 months after treatment. Primary outcome group differences were assessed with t tests for individual outcomes.

RESULTS

Among 142 randomized couples, 105 patients (mostly surgery) and 87 partners completed the 6-month survey; this reflected challenges with recruitment and attrition. There were no differences between the intervention and control arms in Patient-Reported Outcomes Measurement Information System Global Satisfaction With Sex Life scores 6 months after treatment (the primary outcome). Three months after treatment, intervention patients and partners reported more engagement in penetrative and nonpenetrative sexual activities than controls. More than 73% of the intervention participants reported high or moderate satisfaction with module content; more than 85% would recommend the intervention to other couples.

CONCLUSIONS

Online psychosexual support for couples can help couples to connect and experience sexual pleasure early after treatment despite patients' sexual dysfunction. Participants' high endorsement of the intervention reflects the importance of sexual health support to couples after prostate cancer treatment.

LAY SUMMARY

This study tested a web-based program supporting couples' sexual recovery of sexual intimacy after prostate cancer treatment. One hundred forty-two couples were recruited and randomly assigned to the program (n = 60) or to a control group (n = 82). The program did not result in improvements in participants' satisfaction with their sex life 6 months after treatment, but couples in the intervention group engaged in sexual activity sooner after treatment than couples in the control group. Couples evaluated the program positively and would recommend it to others facing prostate cancer treatment.

Incorporating the Principles of Sex Therapy into Urologic Care

Urologic conditions and their treatments can have a significant impact on patients' sexual functioning and sexual health. Although urologists address sexual dysfunction within their scope of practice, sexual health conversations occur rarely and focus narrowly on physiologic sexual function. The sex therapy perspective considers biologic, psychological, relationship, and cultural aspects of sexuality. We propose that urologists benefit from taking this perspective when performing sexual health assessment. Urologists are not required to provide sex therapy but can optimize their patient's sexual well-being by taking a holistic perspective on sex and offering informational resources and referral to colleagues with complementary sexual health expertise.

A prospective observational study of urinary cytokines and inflammatory response in patients with Overactive Bladder Syndrome

BACKGROUND

Contemporary studies have discredited the methods used to exclude urinary tract infection (UTI) when treating overactive bladder (OAB). Thus we must revisit the OAB phenotype to check that UTI has not been overlooked.

AIMS

To examine the differences in urinary cytokines IL6 and lactoferrin in OAB patients compared to controls, with references to microscopy of urine and enhanced quantitative urine culture.

METHODS

A blinded, prospective cohort study with normal controls using six repeated measures, achieved two-monthly, over 12 months.

RESULTS

The differences between patients and controls in urine IL6 (F = 49.0, p < .001) and lactoferrin (F = 228.5, p < .001) were significant and of a magnitude to have clinical implications. These differences were for lactoferrin correlated to symptoms (9.3, p = .003); for both to pyuria (IL6 F = 66.2, p < .001, Lactoferrin F = 73.9, p < .001); and for IL6 microbial abundance (F = 5.1, p = .024). The pathological markers had been missed by urinary dipsticks and routine MSU culture.

CONCLUSION

The OAB phenotype may encompass patients with UTI that is being overlooked because of the failure of standard screening methods.

Mistaken administration of a repeat loading dose of Degarelix leading to acute psychosis

Advanced and metastatic prostate cancer is often managed with hormonal blockage. Luteinising hormone-releasing hormone antagonists achieve rapid testosterone suppression and are used for the treatment of advanced or metastatic prostate cancer. Degarelix is a luteinising hormone-releasing hormone antagonist and is given as a loading dose, followed by a monthly maintenance dose. We report a case where a patient was inadvertently given a second loading dose of Degarelix that resulted in acute psychosis in the form of panic attacks, delusions, suicidal thoughts, insomnia and some visual hallucinations, which are not reported as side-effects of Degarelix.

The role of salvage brachytherapy for local relapse after external beam radiotherapy for prostate cancer

Prostate cancer is the most prevalent cancer amongst men. For localized disease, there currently exist several reliable treatment modalities including surgery, radiotherapy and brachytherapy. Our growing understanding of this disease indicates that local control plays a very important role in prevention of subsequent dissemination. Many improvements to external beam radiotherapy over recent years have decreased toxicity and improved outcomes, but nonetheless, local relapse remains common. Many salvage options exist for locally recurrent prostate cancer, but are rarely offered, partly because of the fear of toxicity. Many men with isolated local recurrence therefore do not receive potentially curative second line treatment and are instead treated with palliative androgen suppression. Selection plays an important role in determining which individuals are likely to benefit from salvage. Those at high risk of pre-existing micro-metastatic disease despite negative staging scans are unlikely to benefit. Prostate brachytherapy has evolved over the more than 3 decades of experience. Modern techniques allow more precise tumor localization and dose delivery. Better understanding of dosimetric parameters can distinguish optimal from suboptimal implants. Salvage brachytherapy can be an effective treatment for locally recurrent prostate cancer after prior external beam radiotherapy. We review the literature pertaining to both low dose rate (LDR) and high dose rate (HDR) salvage brachytherapy and discuss patient selection, optimal dose, treatment volume and toxicity avoidance.

Sexual Health Concerns Among Cancer Survivors: Testing a Novel Information-Need Measure Among Breast and Prostate Cancer Patients

While it is recognized that cancer treatment can contribute to problems in sexual function, much less is currently known about the specific sexual health concerns and information needs of cancer survivors. This study tested a new instrument to measure cancer survivors' sexual health concerns and needs for sexual information after cancer treatment. The Information on Sexual Health: Your Needs after Cancer (InSYNC), developed by a multidisciplinary team of experts, is a novel 12-item questionnaire to measure sexual health concerns and information needs of cancer survivors. We tested the measure with a sample of breast and prostate cancer survivors. A convenience sample of 114 cancer survivors (58 breast, 56 prostate) was enrolled. Results of the InSYNC questionnaire showed high levels of sexual concern among cancer survivors. Areas of concern differed by cancer type. Prostate cancer survivors were most concerned about being able to satisfy their partners (57 %) while breast cancer survivors were most concerned with changes in how their bodies worked sexually (46 %). Approximately 35 % of all cancer survivors wanted more information about sexual health. Sexual health concerns and unmet information needs are common among breast and prostate cancer survivors, varying in some aspects by type of cancer. Routine screening for sexual health concerns should be included in comprehensive cancer survivorship care to appropriately address health care needs. The InSYNC questionnaire is one tool that may help clinicians identify concerns facing their patients.

Cognitive and neurobehavioral symptoms in patients with non-metastatic prostate cancer treated with androgen deprivation therapy or observation: A mixed methods study

BACKGROUND

Few studies have investigated prostate cancer patients' experiences of cognitive functioning or neurobehavioral symptoms (i.e., behavioral changes associated with neurological dysfunction) following androgen deprivation therapy (ADT).

METHODS

Semi-structured interviews conducted from the US by phone and in-person were used to explore and characterize the: 1) experience of cognitive and neurobehavioral functioning in non-metastatic prostate cancer patients undergoing ADT (n = 19) compared with patients who had not undergone ADT (n = 20); 2) perceived causes of cognitive and neurobehavioral symptoms; 3) impact of these symptoms on quality of life; and 4) strategies used to cope with or compensate for these symptoms. Neuropsychological performance was assessed to characterize the sample.

RESULTS

Overall, ADT patients experienced marginally more cognitive problems than non-ADT (nADT) patients even though there were no significant differences between groups in neuropsychological performance. ADT patients also experienced more declines in prospective memory and multi-tasking than nADT patients. Significant proportions of participants in both groups also experienced retrospective memory, attention and concentration, and information processing difficulties. With respect to neurobehavioral symptoms, more ADT patients experienced emotional lability and impulsivity (both aspects of disinhibition) than nADT patients. Among the causes to which participants attributed declines, both groups attributed them primarily to aging. A majority of ADT patients also attributed declines to ADT. For both groups, increased cognitive and neurobehavioral symptoms negatively impacted quality of life, and most participants developed strategies to ameliorate these problems.

CONCLUSION

ADT patients are more vulnerable to experiencing specific cognitive and neurobehavioral symptoms than nADT patients. This study highlights the importance of capturing: a) cognitive symptoms not easily detected using neuropsychological tests; b) neurobehavioral symptoms that can be confused with psychological symptoms, and c) causal beliefs that may affect how people cope with these symptoms. Effective interventions are needed to assist prostate cancer patients in managing these symptoms.

Sexual bother in men with advanced prostate cancer undergoing androgen deprivation therapy

INTRODUCTION

Men with advanced prostate cancer (APC) undergoing androgen deprivation therapy (ADT) often experience distressing sexual side effects. Sexual bother is an important component of adjustment. Factors associated with increased bother are not well understood.

AIMS

This study sought to describe sexual dysfunction and bother in APC patients undergoing ADT, identify socio-demographic and health/disease-related characteristics related to sexual bother, and evaluate associations between sexual bother and psychosocial well-being and quality of life (QOL).

METHODS

Baseline data of a larger psychosocial intervention study was used. Pearson's correlation and independent samples t-test tested bivariate relations. Multivariate regression analysis evaluated relations between sexual bother and psychosocial and QOL outcomes.

MAIN OUTCOME MEASURES

The Expanded Prostate Cancer Index Composite sexual function and bother subscales, Center for Epidemiologic Studies Depression Scale, Functional Assessment of Cancer Therapy--General, and Dyadic Adjustment Scale were the main outcome measures.

RESULTS

Participants (N = 80) were 70 years old (standard deviation [SD] = 9.6) and reported 18.7 months (SD = 17.3) of ADT. Sexual dysfunction (mean = 10.1; SD = 18.0) was highly prevalent. Greater sexual bother (lower scores) was related to younger age (β = 0.25, P = 0.03) and fewer months of ADT (β = 0.22, P = 0.05). Controlling for age, months of ADT, current and precancer sexual function, sexual bother correlated with more depressive symptoms (β = -0.24, P  = 0.06) and lower QOL (β = 0.25, P = 0.05). Contrary to hypotheses, greater sexual bother was related to greater dyadic satisfaction (β = -0.35, P = 0.03) and cohesion (β = -0.42, P = 0.01).

CONCLUSIONS

The majority of APC patients undergoing ADT will experience sexual dysfunction, but there is variability in their degree of sexual bother. Psychosocial aspects of sexual functioning should be considered when evaluating men's adjustment to ADT effects. Assessment of sexual bother may help identify men at risk for more general distress and lowered QOL. Psychosocial interventions targeting sexual bother may complement medical treatments for sexual dysfunction and be clinically relevant, particularly for younger men and those first starting ADT.

Identifying the self-management behaviours performed by prostate cancer survivors: a systematic review of the evidence

Purpose

Prostate cancer survivors are keen to engage as active partners in the management of their condition but have voiced a number of unmet support needs that make effective self-management problematic. Identifying self-management behaviours and evaluating how self-management changes over time may provide valuable insights into how men can be better supported to self-manage. Our systematic review aimed to identify the self-management behaviours for prostate cancer survivors and to evaluate whether these change over time.

Methods

Using the PRISMA statement we performed a systematic review of studies that identified the self-management behaviours of prostate cancer survivors. Databases searched included: DARE, CDSR, Medline, CINAHL, PsycINFO and ASSIA. Studies were classified by levels of evidence and quality assessment.

Results

111 publications were retrieved from the search and 5 publications were included. Men performed a variety of self-management behaviours for psychological and physical problems. Only one study assessed changes in self-management behaviours over time and was limited to men treated by radiotherapy.

Conclusion

Despite the recent political drive for cancer survivors to self-manage, this review has demonstrated the evidence base is under-developed and a wide range of research is needed to address the unmet supportive care needs of prostate cancer survivors. Practically, this review has identified that Dodd’s Self-Care Log was found to have the strongest psychometric properties for additional research in this area.

The lived experience of physically active older prostate cancer survivors on androgen deprivation therapy

This study sought to explore the lived experiences of physically active prostate cancer survivors on androgen deprivation therapy (ADT), who exercise individually. Three older men (74-88 years old) with prostate cancer, using ADT continuously for at least 12 months and regularly exercising for at least 6 months, participated in this qualitative pilot study, informed by interpretive phenomenology. Data were gathered using individual semi-structured interviews, audio recorded and transcribed verbatim. Coherent stories were drawn from each transcript and analyzed using iterative and interpretive methods. van Manen's lifeworld existentials provided a framework for interpreting across the research text. Three notions emerged: Getting started, Having a routine and Being with music. Together they reveal what drew the participants to exercising regularly despite the challenges associated with their cancer and treatments. This study provides insights into the benefits of, and what it means for, older men with prostate cancer to regularly exercise individually. These findings may assist cancer clinicians and other allied health professionals to be more attuned to prostate cancer survivors' lived experiences when undergoing ADT, allowing clinicians to better promote regular exercise to their patients as a foundational component of living well.

Perceived barriers and facilitators to physical activity in men with prostate cancer: possible influence of androgen deprivation therapy

While physical activity is beneficial for men with prostate cancer, too few perform sufficient activity for such benefit. This study examined perceptions of men with prostate cancer of their barriers and facilitators to physical activity, and how androgen deprivation therapy (ADT) may influence these perceptions. Two focus groups were conducted, involving six ADT and eight non-ADT patients respectively. Data were transcribed verbatim and themes developed using a general inductive thematic approach. Facilitators to physical activity common to both groups of cancer survivors included clinician and spousal involvement, with pre-existing co-morbidities and increased age cited as barriers by both groups. The ADT subgroup cited personal involvement as a facilitator to physical activity, with fatigue, reduced motivation and a relative lack of specific advice from their clinician as additional barriers. The non-ADT subgroup had no additional facilitators to physical activity but cited time constraints as a barrier. These results highlight the important role that cancer clinicians and spouses play in promoting physical activity for men with prostate cancer and how ADT may influence their other facilitators and barriers. As physical activity is beneficial for prostate cancer survivors, especially those on ADT, cancer clinicians should regularly discuss physical activity with their patients.

Association of stress management skills and perceived stress with physical and emotional well-being among advanced prostrate cancer survivors following androgen deprivation treatment

Advanced prostate cancer (APC) is associated with disruptions that compromise health related quality of life (HRQOL). Treatment often includes androgendeprivation therapy (ADT), which results in a range of side effects (e.g., fatigue, urinary dysfunction) that further impact HRQOL. Despite these challenges, there are limited evaluations of the impact of stress and stress management skills on HRQOL among APC survivors on ADT. This study evaluated relationships among stress, stress management skills, and HRQOL, and it was hypothesized that better stress management skills would relate to greater physical and emotional well-being by mitigating perceived stress levels. Participants (N = 77) were 69.7 years old (SD = 9.8), 18.6 months post-treatment (SD = 17.5), and ethnically diverse (65 % Non-Hispanic White, 13 % Hispanic, 21 % African-American). Measures included the Measure of Current Status for stress management skills, the Perceived Stress Scale for perceived stress, and the Medical Outcomes Study-Short Form (MOS SF-36; physical functioning and emotional well-being subscales) for HRQOL. Direct effects and mediation models were evaluated to determine the relationships between perceived stress, stress management skills, and HRQOL domains, controlling for relevant covariates. Stress management skills and perceived stress were significantly associated with physical functioning (β = .24, p < .05 and β = -.43, p < .01, respectively) and emotional well-being (β = .35, p < .01 and β = -.64, p < .01, respectively). Regression analyses supported the hypothesis that reduced perceived stress mediated the relationship between stress management skills and both physical functioning and emotional well-being. These results demonstrate that one way stress management skills may impact HRQOL is by lessening ongoing perceptions of stress.

Expression of sexual hormones receptors in oral squamous cell carcinoma

Sexual hormones play an important role in expression of genes involved in a wide variety of biological and neoplastic processes. The information on Estrogen Receptors (ER) expression in non-target tissues is very few and, in particular, the studies in head and neck tumors are still controversial. Recent studies analyzed the role of Tamoxifen (TAM) on Oral Squamous Cell Carcinoma (OSCC) lines in relation to the presence/absence of ER. The purpose of the present study was to evaluate the expression of sexual hormones receptors mRNAs, in particular Estrogen Receptor alpha (ERα) and Androgen Receptor (AR) mRNA in OSCC tissues. The study group comprised 20 samples of OSCC, harvested from 20 otherwise healthy subjects (14 males and 6 females, mean age 58.2y, range 38-74). The control group was formed by 20 samples of normal mucosa harvested around the margins of the specimens (at least 1 cm from the lesion margins). Estrogens Receptor alpha (Era) and Androgen Receptor (AR) mRNA expressions were analyzed by RT-PCR carried out on total RNAs extracted from both cancerous and healthy tissues. Obtained data were evaluated by Shapiro-Walk normality test and compared by Student's t test. Results with p<0.05 were considered statistically significant. AR transcripts were less expressed in OSCC specimens than in healthy tissues, while levels of ERα transcripts significantly increased in tumor samples. These preliminary data show different expression patterns of AR and ERα mRNAs in malignant tissues of oral mucosa and could suggest an involvement of these sexual hormones in oral cancer.

Body composition, physical fitness, functional performance, quality of life, and fatigue benefits of exercise for prostate cancer patients: a systematic review

CONTEXT

Prostate cancer patients, especially those on androgen deprivation therapy (ADT), experience many symptoms that make it difficult to maintain their independence and quality of life. Because ADT acts by means of reducing testosterone production, exercise may offset many of the ADT side effects and those of the cancer itself.

OBJECTIVES

This systematic review of the literature evaluates whether exercise could reduce symptoms and improve quality of life for prostate cancer patients.

METHODS

Using relevant databases and key words, 12 training studies were found meeting the inclusion and exclusion criteria.

RESULTS

Grade A level evidence was observed for the benefits of exercise in improving muscular endurance, aerobic endurance, and overall quality of life, as well as reducing fatigue in prostate cancer patients. Grade B evidence also suggested that exercise may improve prostate cancer patients' muscle mass, muscular strength, functional performance (walking and sit to stand speed), as well as health-related, social and physical quality of life. These effects appeared greater for group-rather than home-based-exercise, especially if these programs included resistance training.

CONCLUSION

It is recommended that most prostate cancer patients be encouraged to exercise regularly by their clinicians and significant others. Where possible, this exercise should be group-based and include some resistance training. Future research in this area should directly compare group- and home-based, as well as resistance, aerobic, and combined resistance and aerobic training to better elucidate the most effective forms of exercise for this population and what factors affect initiation and adherence to such programs.

Patient preoperative expectations of urinary, bowel, hormonal and sexual functioning do not match actual outcomes 1 year after radical prostatectomy

PURPOSE

We studied patient expectations of post-prostatectomy recovery from urinary incontinence, and urinary irritable, hormonal, bowel and sexual function symptoms after preoperative counseling.

MATERIALS AND METHODS

Patients undergoing radical prostatectomy, recruited between June 2007 and November 2008, were extensively counseled preoperatively regarding expected outcomes. They were assessed at baseline and 1 year after surgery using the short form of the Expanded Prostate Index Composite. Their baseline expectations of functional outcomes 1 year after surgery were assessed using the Expanded Prostate Index Composite-Expectations. Pearson's correlation coefficient and a multiple linear regression were used to assess the associations between Expanded Prostate Index Composite-Expectations and Expanded Prostate Index Composite-Short Form at baseline and 1 year.

RESULTS

A total of 152 consenting patients completed all questionnaires. Baseline sexual function score predicted significantly expectations of sexual function (p<0.0001) and urinary incontinence (p<0.0001) scores. Expanded Prostate Index Composite-Expectations predicted Expanded Prostate Index Composite-sexual function at 1 year (p<0.0001). Of the patients 36% and 40% expected the same as baseline function at 1 year in urinary incontinence and sexual function, respectively, and 17%, 45%, 39%, 15% and 32% expected worse than baseline function at 1 year in urinary incontinence, urinary irritable symptoms, bowel function, hormonal function and sexual function, respectively. One year after prostatectomy fewer than 22% of patients attained lower than expected urinary irritable symptoms, and bowel and hormonal function. However, 47% and 44% of patients attained lower than expected function for urinary incontinence and sexual function, respectively. Surprisingly 12% and 17% of patients expected better than baseline urinary incontinence and sexual function at 1 year after surgery.

CONCLUSIONS

Men have unrealistic expectations of urinary and sexual function after prostatectomy despite preoperative counseling. We hypothesize potentially responsible psychological mechanisms. These data provide a baseline for further preoperative educational interventions.

Metabolic and cardiovascular risks of androgen-deprivation therapy for prostate cancer

Androgen-deprivation therapy is frequently used to treat metastatic prostate cancer and is increasingly used to treat local and regional prostate cancer. Androgen deprivation has been shown to increase central obesity and insulin resistance, and it can alter serum lipid profiles. Recent data suggest that androgen-deprivation therapy is also associated with incident diabetes and cardiovascular disease and cardiac-related mortality. Patients and physicians making decisions regarding the use of androgen-deprivation therapy should weigh the benefits and possible risks, particularly when androgen-deprivation therapy is being used for indications where benefits have not been clearly defined. They may also want to consider monitoring for possible side effects related to cardiovascular and metabolic outcomes.

Management of anaemia in prostate cancer

Anaemia is a frequent complication of prostate cancer and of its treatments. In Europe prostate cancer accounts for the 10.8% of all malignant neoplasms. Iatrogenic hypogonadism and age-related physiologic changes along with nutritional deficits contribute to increase prevalence of prostate cancer related anaemia. The reason of the present review is to provide clinicians with all aspects of a frequent and multifactorial co-morbidity, whose effects are often underestimated. Erythropoiesis pathology and causes of anaemia in prostate cancer are reviewed. Critical issues of clinical management of anaemia in prostate cancer are discussed.

Evaluation of degarelix in the management of prostate cancer

Medical castration using gonadotropin-releasing hormone (GnRH) receptor agonists currently provides the mainstay of androgen deprivation therapy for prostate cancer. Although effective, these agents only reduce testosterone levels after a delay of 14 to 21 days; they also cause an initial surge in testosterone that can stimulate the cancer and lead to exacerbation of symptoms ("clinical flare") in patients with advanced disease. Phase III trial data for the recently approved GnRH receptor blocker, degarelix, demonstrated that it is as effective and well tolerated as GnRH agonists. However, it has a pharmacological profile more closely matching orchiectomy, with an immediate onset of action and faster testosterone and PSA suppression, without a testosterone surge or microsurges following repeated injections. As a consequence, with this GnRH blocker, there is no risk of clinical flare and no need for concomitant antiandrogen flare protection. Degarelix therefore provides a useful addition to the hormonal armamentarium for prostate cancer and offers a valuable new treatment option for patients with hormone-sensitive advanced disease. Here, we review key preclinical and clinical data for degarelix, and look at patient-focused perspectives in the management of prostate cancer.

Proton MRS detects metabolic changes in hormone sensitive and resistant human prostate cancer models CWR22 and CWR22r

17-Allylamino, 17-demethoxygeldanamycin (17-AAG), an effective inhibitor of the heat shock protein hsp90, preferentially inhibiting tumor hsp90 compared to hsp90 from normal cells, has shown promising results against several cancers, including hormone-resistant prostate cancer. Levels of several oncogenic proteins critical to tumor growth and progression, such as androgen receptor and HER2/neu, were reduced 4 h post 17-allylamino, 17-demethoxygeldanamycin treatment. Posttreatment metabolic changes have also been observed in several tumor cell lines. In this study, total choline distributions in hormone sensitive CWR22 and hormone resistant CWR22r prostate cancer xenograft tumors in mice were measured before and at 4 h and 48 h after a single-bolus 17-allylamino, 17-demethoxygeldanamycin treatment at 100 mg/kg, using proton MR spectroscopy. Our results show that tumor total choline levels declined 4 h after the treatment for CWR22 (P = 0.001) and 48 h post treatment for CWR22r (P = 0.003). Metabolic changes, in particular of total choline intensity detected by proton magnetic resonance spectroscopic imaging (MRSI), are consistent with the observed immunohistochemistry changes, tumor growth inhibition for CWR22r (P = 0.01 at 14 days post treatment), and a constant prostate specific antigen level versus increasing prostate specific antigen for control CWR22 (P = 0.01). Metabolic changes in total choline by proton MRSI can be used as an early biomarker of response for advanced-stage prostate cancer in targeted therapy such as 17-allylamino, 17-demethoxygeldanamycin.

The unintended burden of increased prostate cancer detection associated with prostate cancer screening and diagnosis

The increasing incidence of prostate cancer is associated with the intensity of screening for prostate-specific antigen. Although some men may benefit from the early detection of prostate cancer through screening, all men diagnosed with prostate cancer experience an effect on their mental and physical well-being and that of their families. In light of the recent publication of the United States Preventive Services Task Force recommendations concerning prostate-specific antigen testing, this article reviews the quality-of-life implications of prostate cancer screening and diagnosis, and explores risk reduction in screened men as a potential strategy to manage these issues.

A randomized phase 1 study of testosterone replacement for patients with low-risk castration-resistant prostate cancer

BACKGROUND

Even in castration-resistant prostate cancer (CRPC), the androgen pathway remains biologically relevant. In preclinical models, androgen therapy for CRPC leads to growth arrest, apoptosis, and tumor shrinkage.

OBJECTIVE

This study sought to determine the toxicity and feasibility of a testosterone therapy in early CRPC.

DESIGN, SETTING, AND PARTICIPANTS

Prostate cancer patients with progressive disease following androgen ablation, antiandrogen therapy, and withdrawal and no to minimal metastatic disease who were followed at the University of Chicago were randomized to treatment with three doses of transdermal testosterone.

INTERVENTION

Patients were treated with transdermal testosterone at 2.5, 5.0, or 7.5 mg/day.

MEASUREMENTS

Toxicity, prostate-specific antigen (PSA), imaging, quality of life (QoL), and strength were monitored. Treatment was discontinued for significant toxicity, clinical progression, or a 3-fold increase in PSA.

RESULTS AND LIMITATIONS

Fifteen men with a median age of 73 yr (range: 62-92) and a median PSA of 11.1 ng/ml (range: 5.2-63.6) were treated. Testosterone increased from castrate to median concentrations of 305 ng/dl, 308 ng/dl, and 297 ng/dl for dosages of 2.5 mg/day (n=4), 5.0 mg/day (n=5), and 7.5 mg/day (n=5), respectively. One patient was taken off of the study at 53 wk due to grade 4 cardiac toxicity. There were no other grade 3 or 4 toxicities related to the study medication, and the grade 2 toxicities were minimal. Only one patient experienced symptomatic progression, and three (20%) patients demonstrated a decrease in PSA (largest was 43%). Median time to progression was 9 wk (range: 2-96), with no detectable difference in the three dose cohorts. There was no significant improvement in QoL, and there was a borderline statistically significant improvement in hand-grip strength with treatment. The study was limited by sample size, single arm, and variability of baseline patient characteristics.

CONCLUSIONS

Testosterone is a feasible and reasonably well-tolerated therapy for men with early CRPC. A larger, randomized trial is under way to further characterize efficacy and impact on QoL measures.

TGFB1 gene polymorphism Leu10Pro (c.29T>C), prostate cancer incidence and quality of life in patients treated with brachytherapy

OBJECTIVES

Transforming growth factor beta1 gene (TGFB1) variant Leu10Pro (L10P) has previously been implicated in prostate cancer risk and radiation-induced side-effects. We investigated whether prevalence of this polymorphism is increased in prostate cancer patients and whether carriers are at increased risk for treatment-related side effects.

METHODS

A series of 445 consecutive patients treated for early-stage prostate cancer receiving definitive I-125 brachytherapy (permanent seed implantation) between 10/2000 and 10/2007 at our institution and a comparison group of 457 healthy male control individuals were screened for TGFB1 L10P (869T>C) polymorphism. Morbidity was assessed prospectively and compared between carriers versus non-carriers using International Prostate Symptom Score (IPSS), disease-specific Quality-of-Life single question added to the IPSS and International Index of Erectile Function with its subgroups.

RESULTS

The Leu/Leu genotype was found in 150 patients (34%) versus 180 controls (39%), the Pro/Pro genotype in 75 patients (17%) versus 65 controls (14%) and the Leu/Pro genotype in 220 patients (49%) versus 212 controls (46%) without any statistically significant differences between the two groups. There was a trend towards an increased prevalence of the L10P substitution among patients with a per allele odds ratio of 1.19 (95% CI 0.99-1.44; P = 0.08). After a median follow-up of 18 months (range 1-60 months) there were no statistically significant differences regarding morbidity.

CONCLUSIONS

TGFB1 polymorphism L10P is not strongly associated with prostate cancer risk. After 18 months, there was no evidence for increased adverse radiotherapy responses in heterozygote or rare homozygote carriers. Longer follow-up may be necessary to detect a statistically significant difference.

Auricular acupuncture: a novel treatment for vasomotor symptoms associated with luteinizing-hormone releasing hormone agonist treatment for prostate cancer

OBJECTIVES

To evaluate the role of auricular acupuncture (AA) in men receiving luteinizing-hormone releasing hormone (LHRH) analogues for carcinoma of the prostate, as vasomotor symptoms can affect the quality of life in such men, and similar symptoms in postmenopausal women have been successfully treated with AA.

PATIENTS AND METHODS

In all, 60 consecutive patients with prostate cancer and on LHRH agonist treatment (median age 74 years, range 58-83) consented to weekly AA for 10 weeks. The validated 'Measure Yourself Concerns and Well-Being' questionnaire (a six-point scale to assess symptom severity) was used to assess concerns and well-being before and after treatment.

RESULTS

All men completed the treatment with no adverse events recorded, apart from transient exacerbation of symptoms in two men; 95% of patients reported a decrease in the severity of symptoms, from a mean 5.0 to 2.1 (Student's t-test, P < 0.01).

CONCLUSIONS

The symptomatic improvement was at levels comparable with that from pharmacotherapy, and cost analysis showed AA to be a viable alternative. Larger randomized studies are needed to fully evaluate AA against more conventional treatments, and these are planned.

Neoadjuvant therapy followed by prostatectomy for clinically localized prostate cancer

The results of this assessment of the literature indicated that neoadjuvant therapy followed by prostatectomy may improve long-term outcomes for patients with high-risk localized disease. In addition, this approach provides a paradigm for evaluating the activity and mechanism of action of new agents as correlative studies are facilitated by the availability of tumor tissue before and after therapy. The authors determined that a multidisciplinary approach involving oncologists, urologists, and pathologists is critical to the success of this model. Recent and ongoing studies of neoadjuvant therapy followed by prostatectomy were reviewed.

Current immunotherapeutic strategies in prostate cancer

For men who have hormone-refractory prostate cancer, current treatment options are somewhat limited, with docetaxel the only agent showing a significant prolongation of survival. Several groups have investigated therapeutic approaches involving stimulation of an immune response against progressive prostate cancer. Several features of prostate cancer suggest that it may be a good target for immunotherapy. Constant pressure by the immune system forces tumors to evolve multiple ways to escape immune assault, however, and it is thus unlikely that single-agent immunotherapy for prostate cancer will achieve maximal clinical benefit. Most likely, successful immunotherapy will eventually require either the combination of multiple immunologic approaches or the combination of immunologic approaches with conventional therapy.

Escalated-dose versus standard-dose conformal radiotherapy in prostate cancer: first results from the MRC RT01 randomised controlled trial

BACKGROUND

In men with localised prostate cancer, conformal radiotherapy (CFRT) could deliver higher doses of radiation than does standard-dose conventional radical external-beam radiotherapy, and could improve long-term efficacy, potentially at the cost of increased toxicity. We aimed to present the first analyses of effectiveness from the MRC RT01 randomised controlled trial.

METHODS

The MRC RT01 trial included 843 men with localised prostate cancer who were randomly assigned to standard-dose CFRT or escalated-dose CFRT, both administered with neoadjuvant androgen suppression. Primary endpoints were biochemical-progression-free survival (bPFS), freedom from local progression, metastases-free survival, overall survival, and late toxicity scores. The toxicity scores were measured with questionnaires for physicians and patients that included the Radiation Therapy Oncology Group (RTOG), the Late Effects on Normal Tissue: Subjective/Objective/Management (LENT/SOM) scales, and the University of California, Los Angeles Prostate Cancer Index (UCLA PCI) scales. Analysis was done by intention to treat. This trial is registered at the Current Controlled Trials website http://www.controlled-trials.com/ISRCTN47772397.

FINDINGS

Between January, 1998, and December, 2002, 843 men were randomly assigned to escalated-dose CFRT (n=422) or standard-dose CFRT (n=421). In the escalated group, the hazard ratio (HR) for bPFS was 0.67 (95% CI 0.53-0.85, p=0.0007). We noted 71% bPFS (108 cumulative events) and 60% bPFS (149 cumulative events) by 5 years in the escalated and standard groups, respectively. HR for clinical progression-free survival was 0.69 (0.47-1.02; p=0.064); local control was 0.65 (0.36-1.18; p=0.16); freedom from salvage androgen suppression was 0.78 (0.57-1.07; p=0.12); and metastases-free survival was 0.74 (0.47-1.18; p=0.21). HR for late bowel toxicity in the escalated group was 1.47 (1.12-1.92) according to the RTOG (grade >/=2) scale; 1.44 (1.16-1.80) according to the LENT/SOM (grade >/=2) scales; and 1.28 (1.03-1.60) according to the UCLA PCI (score >/=30) scale. 33% of the escalated and 24% of the standard group reported late bowel toxicity within 5 years of starting treatment. HR for late bladder toxicity according to the RTOG (grade >/=2) scale was 1.36 (0.90-2.06), but this finding was not supported by the LENT/SOM (grade >/=2) scales (HR 1.07 [0.90-1.29]), nor the UCLA PCI (score >/=30) scale (HR 1.05 [0.81-1.36]).

INTERPRETATION

Escalated-dose CFRT with neoadjuvant androgen suppression seems clinically worthwhile in terms of bPFS, progression-free survival, and decreased use of salvage androgen suppression. This additional efficacy is offset by an increased incidence of longer term adverse events.