Patient-reported health-related quality of life up to three years after the treatment with permanent brachytherapy: Outcome of the large-scale, prospective longitudinal study in Japanese–Prostate Cancer Outcome Study by Permanent I-125 Seed Implantation (J-POPS)

Current status and issues with the dosimetric assay of iodine-125 seed sources at medical facilities in Japan: a questionnaire-based survey†

In conducting dosimetric assays of seed sources containing iodine-125 (125I), several major guidelines require the medical physicist to verify the source strength before patient treatment. Japanese guidelines do not mandate dosimetric assays at medical facilities, but since 2017, three incidents have occurred in Japan wherein seeds with incorrect strengths were delivered to medical facilities. Therefore, this study aimed to survey the current situation and any barriers to conducting the dosimetric assay of iodine-125 seeds at medical facilities in Japan. We conducted a questionnaire-based survey from December 2020 to April 2021, to examine whether seed assay and verification of the number of seeds delivered were being performed. We found that only 9 facilities (16%) performed seed assay and 28 (52%) verified the number of seeds. None of the facilities used an assay method that ensured traceability. The reasons for not performing an assay were divided into two categories: lack of resources and legal issues. Lack of resources included lack of instruments, lack of knowledge of assay methods, shorthand, or all of the above, whereas legal issues included the inability to resterilize iodine-125 seeds distributed in Japan and/or purchase seeds dedicated to the assay. Dosimetric assays, including simple methods, are effective in detecting calibration date errors and non-radioactive seeds. The study findings suggest that familiarization of medical personnel with these assay methods and investigation of the associated costs of labor and equipment should be recommended, as these measures will lead to medical reimbursement for quality assurance.

Comparison of chronic gastrointestinal and genitourinary toxicities between brachytherapy and external beam radiotherapy for patients with prostate cancer: A systematic review and meta-analysis

BACKGROUND

125I BT is an effective radiotherapy for prostate cancer. However, comparison data of GI and GU toxicities between BT, BT + EBRT, and EBRT-alone patient groups is limited.

OBJECTIVE

To define the GI and GU toxicities in prostate cancer to prevent adverse events after treatment.

METHODS

We searched published studies in PubMed, Cochrane, and Embase databases up to December 31, 2022. The endpoints were the RRs of GI and GU toxicities. Pooled data were assessed using a random-effects model.

RESULTS

Fifteen eligible studies were included into this analysis. LDR-BT had significantly lower RRs than LDR-BT + EBRT for acute GI (2.13; 95% CI, 1.22-3.69; P= 0.007) and late GI toxicities (3.96; 95% CI, 1.23-12.70; P= 0.02). Moreover, EBRT had significantly higher RRs than LDR-BT for acute GU (2.32; 95% CI, 1.29-4.15; P= 0.005) and late GU toxicities (2.38; 95% CI, 1.27-4.44; P= 0.007). HDR-BT had significantly higher RRs for acute GU toxicities than LDR-BT alone (0.30; 95% CI, 0.23-0.40; P< 0.00001).

CONCLUSION

The results implied that BT with and without EBRT can result in both GI and GU toxicities in patients with prostate cancer, with LDR-BT leading to a poorer urinary function than EBRT.

A multicenter prospective study on quality of life and pain relief for cancer patient after 125I seed implantation

Objective

To prospectively explore the efficacy of 125I seed implantation on quality of life and pain relief in cancer patient.

Methods

Consecutive cancer patients who underwent 125I seed implantation in three centers in China between October 1, 2020 and March 31, 2021, were assessed. The Functional Assessment of Cancer Therapy and Brief Pain Inventory were used to evaluate patients' quality of life and pain relief on the day before, 1 week, 1 month, and 3 months after seed implantation.

Results

A total of 104 cancer patients were enroled. Total score of quality of life was not statistically different 3 months after seed implantation compared with before implantation, while patients' quality of life was worse one week after seed implantation but then recovered. A total of 43 (41.3%) patients had pain before seed implantation, of which 16 (37.2%) patients had severe pain and 27 (62.8%) had mild-to-moderate pain. In patients with severe pain, the worst pain scores decreased significantly 3 months after implantation. In patients with mild-to-moderate pain, pain severity and pain interference score increased significantly after implantation compared with pre-implantation. Compared with pain before implantation, patients' quality of life of patients without pain was higher.

Conclusions

125I seed implantation maintains the quality of life of patients within 3 months. For patients with severe pain, seed implantation has obvious pain relief, which improves the quality of life of the patients. Nurses should provide personalized guidance for patients with different degrees of pain.

Impacts of Neoadjuvant Hormonal Therapy Prior to Robot-Assisted Radical Prostatectomy on Postoperative Hormonal- and Sexual-Related Quality of Life – Assessment by Patient-Reported Questionnaire

Purpose

Neoadjuvant hormonal therapy (HT) before radical prostatectomy (RP) is not recommended by current guidelines in terms of oncological outcomes. Despite this, neoadjuvant HT is sometimes conducted before RP for a small proportion of patients in clinical practice. This study evaluated the impacts of neoadjuvant HT on hormonal- and sexual-related quality of life (QOL) among patients who underwent robot-assisted RP (RARP).

Materials and Methods

Participants comprised 470 patients divided into a non-neoadjuvant HT group (n = 408) and a neoadjuvant HT group (n = 62). Hormonal- and sexual-related QOL were measured using the Expanded Prostate Cancer Index Composite (EPIC) questionnaire.

Results

Hormonal summary scores at 6 and 9 months, function scores before and 3, 6, and 9 months and bother score at 6 months after RARP were significantly lower in the neoadjuvant HT group than in the non-neoadjuvant HT group. Sexual function scores were decreased in the neoadjuvant HT group compared to the non-neoadjuvant HT group before and 6 months after RARP. In the neoadjuvant HT group, sexual function at 3 months after RARP was significantly worse in patients with >5 months of neoadjuvant HT than in patients with ≤5 months of neoadjuvant HT. Conversely, sexual bother at 3 months after RARP was significantly worse in patients with ≤5 months of neoadjuvant HT than in patients with >5 months of neoadjuvant HT.

Conclusion

Vintage neoadjuvant HT prior to RARP should not be recommended due to not only oncological outcomes, but also the impacts on postoperative hormonal- and sexual-related QOL.

Health-related quality of life 24 months after prostate cancer diagnosis: an update from the Pros-IT CNR prospective observational study

BACKGROUND

This study analyzes patient health-related quality of life (QoL) 24-month after prostate cancer (PCa) diagnosis within the PROState cancer monitoring in ITaly from the National Research Council (Pros-IT CNR) study.

METHODS

Pros-IT CNR is an ongoing, longitudinal and observational study, considering a convenience sample of patients enrolled at PCa diagnosis and followed at 6, 12, 24, 36, 48 and 60 months from the diagnosis. Patients were grouped according to the treatment received: nerve sparing radical prostatectomy (NSRP), non-nerve sparing radical prostatectomy (NNSRP), radiotherapy (RT), RT plus androgen deprivation (RT plus ADT) and active surveillance (AS). QoL was measured through the Italian versions of SF-12 and UCLA-PCI questionnaires at diagnosis and at 6-12 and 24-month. The minimal clinically important difference (MCID) was defined as half a standard deviation of the baseline domain.

RESULTS

Overall, 1537 patients were included in the study. The decline in urinary function exceeded the MCID at each timepoint only in the NSRP and NNSRP groups (at 24 months -14.7, P<0.001 and -19.7, P<0.001, respectively). The decline in bowel function exceeded the MCID only in the RT (-9.1, P=0.02) and RT plus ADT groups at 12 months (-10.3, P=0.001); after 24 months, most patients seem to recover their bowel complaints. The decline in sexual function exceeded the MCID at each timepoint in the NNSRP, NSRP and RT plus ADT groups (at 6 months -28.7, P<0.001, -37.8, P<0.001, -20.4, P<0.001, respectively).

CONCLUSIONS

Although all the treatments were relatively well-tolerated over the 24 month period following PCa diagnosis, each had a different impact on QoL.

Minimal channel GreenLight photovaporization before permanent implant prostate brachytherapy for patients with obstructive symptoms: Technically feasible and safe

PURPOSE

Brachytherapy (BrT) is a standard treatment for low-risk to favorable-intermediate-risk prostate cancer but is a relative contraindication for patients with obstructive symptoms. We aimed to assess the feasibility and urinary toxicity of a minimal photovaporization (mPVP) before implantation.

MATERIALS AND METHODS

Between 04/2009 and 08/2016, 50 patients candidates for BrT but with International Prostate Symptom Score (IPSS)>15, uroflowmetry <15 mL/s, obstructive prostate or large median lobe underwent a mPVP (GreenLight Laser) at least 6 weeks (median 8.5) before permanent seed implantation (loose seeds, ¹²⁵I, 160 Gy).

RESULTS

Two patients (4%) did not have sufficient improvement and did not undergo BrT, although it would have been possible at 3 months. For the 48 (96%) other patients, at the baseline, mean IPSS was 15.5 (±5.3), vs. 8.6 (±4.4) after mPVP (p = 1 × 10^-6), and uroflowmetry 11.7 mL/s (±4), vs. 17.4 (±5.4) (p = 1.4 × 10^-5). We did not experience any difficulty for BrT. Mean IPSS did not significantly increase 1, 3, or 6 months after BrT. With a median followup of 60 months [30-120], (92% assessed at last followup), only 4 patients (4/48 = 8.3%) experienced urinary retention and 5 (10.4%) needed surgery for urinary toxicity. In addition, only 2 patients (4%) needed medical treatment at last followup. Considering the 8 patients with de novo incontinence at 1 year, only 2 (4%) had persistent mild symptoms at last followup (36 months) (ICS1-2).

CONCLUSIONS

These results suggest that a two-step approach with an mPVP at least 6 weeks before BrT is feasible, with no excessive urinary toxicity, and may be a good strategy for obstructive patients seeking BrT.