A phase 2 trial exploring the significance of homologous recombination status in patients with platinum sensitive or platinum resistant relapsed ovarian cancer receiving combination cediranib and olaparib.

OBJECTIVE: Combination cediranib/olaparib has reported activity in relapsed ovarian cancer. This phase 2 trial investigated the activity of cediranib/olaparib in relapsed ovarian cancer and its association with homologous recombination deficiency (HRD). METHODS: Seventy patients were enrolled to cohorts of either platinum-sensitive or platinum-resistant ovarian cancer and received olaparib tablets 200 mg twice daily and cediranib tablets 30 mg once daily under a continuous dosing schedule. HRD testing was performed on pre-treatment, on-treatment and archival biopsies by sequencing key homologous recombination repair (HRR) genes and by genomic LOH analysis. The primary objective for the platinum-sensitive cohort was the association of HRD, defined as presence of HRR gene mutation, with progression-free survival (PFS). The primary objective for the platinum-resistant cohort was objective response rate (ORR), with a key secondary endpoint evaluating the association of HRD status with activity. RESULTS: In platinum-sensitive ovarian cancer (N = 35), ORR was 77.1% (95% CI 59.9-89.6%) and median PFS was 16.4 months (95% CI 13.2-18.6). Median PFS in platinum-sensitive HRR-HRD cancers (N = 22) was 16.8 months (95% CI 11.3-18.6), and 16.4 months (95% CI 9.4-NA) in HRR-HR proficient cancers (N = 13; p = 0.57). In platinum-resistant ovarian cancer (N = 35), ORR was 22.9% (95% CI 10.4-40.1%) with median PFS 6.8 months (95% CI 4.2-9.1). Median PFS in platinum-resistant HRR-HRD cancers (N = 7) was 10.5 months (95% CI 3.6-NA) and 5.6 months (95% CI 3.6-7.6) in HRR-HR proficient cancers (N = 18; p = 0.23). CONCLUSIONS: Cediranib/olaparib had clinical activity in both platinum-sensitive and -resistant ovarian cancer. Presence of HRR gene mutations was not associated with cediranib/olaparib activity in either setting.

Mixed-methods analysis of decisional regret in parents following a child's death from cancer.

BACKGROUND AND OBJECTIVES: Decisional regret is common in bereaved parents. We aimed to identify factors associated with and to explain patterns of parental decisional regret. METHODS: We used a convergent mixed-methods design including quantitative items and free-text responses from a survey of parents 6-24 months from their child's death from cancer. Parents expressed whether they had regrets about decisions during the end of their child's life (Yes/No/I don't know) and elaborated with free text. Results of qualitative content analysis of free-text responses guided development and interpretation of quantitative multinomial models. RESULTS: Parents (N = 123 surveys, N = 84 free text) primarily identified as White (84%), mothers (63%), and primary caregivers (69%) for their children. Forty-seven (38%) parents reported decisional regret, 61 (49%) indicated no regret, and 15 (12%) were unsure. Mothers (relative risk [RR]: 10.3, 95%CI: [1.3, 81.3], p = .03) and parents who perceived greater suffering at the end of their child's life (RR = 3.8, 95%CI: [1.2, 11.7], p = .02) were at increased risk of regret; qualitative evaluation revealed elements of self-blame and difficulty reconciling treatment choices with the ultimate outcome. Preparation for symptoms was associated with decreased risk of regret (RR = 0.1, 95%CI: [0, .3], p < .01) with qualitative reflections focused on balanced teamwork that alerted parents for what to expect and how to make meaningful final memories. CONCLUSIONS: Though decisional regret is common among cancer-bereaved parents, mothers and those who perceive more suffering in their children may be at particular risk. Close collaboration between families and clinicians to prepare for symptoms and proactively attend to and minimize suffering may help alleviate decisional regret.

"It's a lot of things": Household material hardship among Black and Hispanic parents of children with cancer.

Household material hardship (HMH)-housing, food, transportation, or utility insecurity-is an adverse social determinant of health that is modifiable in the clinical setting. This mixed-methods, single-center study explored the experiences of HMH among Black and Hispanic pediatric oncology parents utilizing a single timepoint survey (N = 60) and semi-structured interviews (N = 20 purposively sampled subcohort). Forty-four (73%) parents reported HMH. Qualitatively, participants expressed stress, anxiety, and embarrassment due to unmet basic resource needs, and childcare emerged as an additional important domain of HMH. Participants recommend a standardized approach to HMH screening and resource allocation, offering insight into targets for future intervention.

How does patient-centered communication in ovarian cancer care enhance patient well-being? A mixed methods study.

OBJECTIVE: Greater perceived patient-centered communication (PCC) is associated with better health-related quality of life (HRQoL) in patients with ovarian cancer. Quantitative measures of PCC and HRQoL do little to explain this association. We interviewed patients with high and low ratings of PCC to understand how it is associated with HRQoL. METHODS: Explanatory sequential mixed methods study. Participants were English-speaking U.S. adults with ovarian cancer. We assessed PCC with the Patient-Centered Communication - Cancer (PCC-Ca)-36 (possible score range 1-5; higher scores represent greater patient-centeredness), and purposively sampled 14 participants with total scores in the top and bottom quartiles. Participants completed individual, semi-structured interviews about their communication experiences. Guided by the National Cancer Institute Framework for PCC in Cancer Care, we analyzed interview transcripts using directed content analysis. We integrated survey and interview findings in a joint display. RESULTS: Among 176 survey respondents, PCC-Ca-36 total scores ranged from 1.7 to 5.0. Participants with scores in the top quartile (4.8-5.0) perceived clinicians as proactive and attentive to psychosocial concerns. Those with scores in the bottom quartile (1.7-3.5) described not feeling known as an individual and receiving limited support for self-management. CONCLUSIONS: The association between PCC and QoL may be partially explained by differences in perceived support for psychosocial concerns and self-management. PCC may facilitate receipt of proactive, personalized care.

Concordance between influential adverse treatment outcomes and localized prostate cancer treatment decisions.

BACKGROUND: Although treatment decisions for localized prostate cancer (LPC) are preference-sensitive, the extent to which individuals with LPC receive preference-concordant treatment is unclear. In a sample of individuals with LPC, the purpose of this study was to (a) assess concordance between the influence of potential adverse treatment outcomes and treatment choice; (b) determine whether receipt of a decision aid predicts higher odds of concordance; and (c) identify predictors of concordance from a set of participant characteristics and influential personal factors. METHODS: Participants reported the influence of potential adverse treatment outcomes and personal factors on treatment decisions at baseline. Preference-concordant treatment was defined as (a) any treatment if risk of adverse outcomes did not have a lot of influence, (b) active surveillance if risk of adverse outcomes had a lot of influence, or (c) radical prostatectomy or active surveillance if risk of adverse bowel outcomes had a lot of influence and risk of other adverse outcomes did not have a lot of influence. Data were analyzed using descriptive statistics and logistic regression. RESULTS: Of 224 participants, 137 (61%) pursued treatment concordant with preferences related to adverse treatment outcomes. Receipt of a decision aid did not predict higher odds of concordance. Low tumor risk and age ≥ 60 years predicted higher odds of concordance, while attributing a lot of influence to the impact of treatment on recreation predicted lower odds of concordance. CONCLUSIONS: Risk of potential adverse treatment outcomes may not be the foremost consideration of some patients with LPC. Assessment of the relative importance of patients' stated values and preferences is warranted in the setting of LPC treatment decision making. CLINICAL TRIAL REGISTRATION: NCT01844999 ( www. CLINICALTRIALS: gov ).

Transitioning from heparin to saline locks for central venous access devices in oncology: An evidence-based practice approach.

Central vascular access devices (CVADs) are often essential to the care of patients undergoing long-term cancer treatment. CVAD maintenance is an essential oncology nurse competency. Evidence-based practice (EBP) in flushing and locking help to prevent intraluminal occlusion, a common complication. Heparinized saline (HS) has been the standard locking solution for CVADs. However, research indicates no superiority of HS over normal saline (NS). The objectives of this EBP project were 1) to evaluate whether a significant difference in intraluminal occlusion was associated with the change from HS to NS use for locking CVADs in ambulatory oncology care, and 2) to evaluate the effects of peer nurse mentoring on nurses' and patients' perspectives about the practice change. Analysis of data revealed decreases in alteplase usage after transitioning to NS locking. Patient and nurse surveys indicated that peer nurse mentoring increased nurse and patient confidence and competence in making the practice transition.

Decision support for men with prostate cancer: Concordance between treatment choice and tumor risk.

BACKGROUND: Decision support tools improve decisional conflict and elicit patient preferences related to prostate cancer treatment. It was hypothesized that men using the Personal Patient Profile-Prostate (P3P) would be more likely to pursue guideline-concordant treatment. METHODS: Men from a trial assessing the P3P decision support intervention were identified. The primary exposure was allocation to P3P (vs usual care), and the outcome was appropriate treatment per guidelines (eg, low risk = active surveillance). It was assessed whether providers recommended against any treatment options (ie, restricted). A multivariable model was fit for men with low-risk cancer that estimated the odds of the outcome of interest. RESULTS: This study identified 295 men in the cohort: 113 (38%) had low-risk disease, 119 (40%) had favorable intermediate-risk disease, and 63 (21%) had unfavorable intermediate-risk disease. Among low-risk patients, more men pursued active surveillance after using P3P whether they were given unrestricted (62% vs 54% with usual care; P = .54) or restricted options (71% vs 59% with usual care; P = .34). After adjustments, only Black race (odds ratio [OR], 0.31; 95% CI, 0.11-0.89) and restricted options (OR, 0.23; 95% CI, 0.08-0.65) had an inverse association with the receipt of surveillance for patients with low-risk prostate cancer. An impact associated with P3P versus usual care (OR, 0.89; 95% CI, 0.36-2.20) was not observed. CONCLUSIONS: Among men in a trial assessing a decision support tool, Black race and restricted treatment options were associated with less use of active surveillance for low-risk prostate cancer. Although the P3P instrument ameliorates decisional conflict, its use was not associated with more appropriate alignment of treatment with disease risk.

Perceived patient-centered communication, quality of life, and symptom burden in individuals with ovarian cancer.

OBJECTIVE: To describe perceptions of patient-centered communication (PCC); assess whether physician specialty, patient characteristics, or health system characteristics are associated with PCC; and identify associations between PCC, health-related quality of life (HRQoL), and symptom burden among individuals with ovarian cancer. METHODS: Cross-sectional, descriptive survey of English-speaking adults with ovarian cancer. PCC, HRQoL, and ovarian cancer symptom burden were assessed with the PCC-Ca-36, the FACT-G, and the FOSI-18, respectively. PCC-Ca-36 scores were summarized using descriptive statistics. Predictors of PCC-Ca-36, FACT-G, and FOSI-18 scores were identified using multiple linear regression. RESULTS: Participants (n = 176) had a mean age of 59.4 years (SD = 12.1). The majority (65.9%) had advanced-stage disease, while 42.0% were receiving treatment. The mean PCC-Ca-36 total score was 4.09 (SD = 0.78) out of a possible 5, indicating participants often perceived that clinicians engaged in PCC. Among the PCC functions, participants reported that clinicians least often enabled patient self-management (M = 3.65, SD = 0.99), responded to emotions (M = 3.84, SD = 1.04), and managed uncertainty (M = 3.91, SD = 0.93). In multivariable analyses, neither physician specialty nor patient and health system characteristics were significantly associated with overall PCC. Greater overall PCC predicted better overall HRQoL; better social/family, emotional, and functional well-being; and lower overall and physical symptom burden (all p ≤ 0.05). CONCLUSION: Greater PCC is significantly associated with better HRQoL and lower symptom burden among individuals with ovarian cancer. PRACTICE IMPLICATIONS: Promotion of PCC is a promising strategy to improve patient-reported outcomes in the ovarian cancer care setting.

Stepping into survivorship pilot study: Harnessing mobile health and principles of behavioral economics to increase physical activity in ovarian cancer survivors.

OBJECTIVE: Physical activity improves physical function, quality of life, and mental health, yet fewer than 80% of ovarian cancer survivors meet activity guidelines. This pilot intervention study aimed to increase physical activity in ovarian cancer survivors by leveraging principles of behavioral economics, gamification, and social support. METHODS: This 24-week study (12-week intervention; 12-week follow-up) enrolled women with ovarian cancer after completion of first-line treatment with a self-selected "teammate." Participants used Fitbits to measure daily steps, select an increased step goal, and enroll in a collaborative game, including points and levels for achieving step goals. Primary outcomes were feasibility (defined a priori as ≥60% approach-to-consent ratio and ≥ 70% adherence to Fitbit), acceptability (≤20% of participants reporting burden or regret for participation) and preliminary efficacy (≥70% reporting increased motivation); exploratory outcomes included change in steps. RESULTS: We recruited 24 participants (mean age = 63 years, range = 37-79 years) with a 94% approach-to-consent ratio. All participants completed the intervention with 94% tracker adherence. At 24-week follow-up, 1/24 (≤5%) of participants reported burden; 0/24 (0%) reported regret for study participation; and 22/24 (>90%) agreed/strongly agreed that "the study motivated me to increase activity levels." Participants' mean daily steps were 6210.7 (±3328.1) at baseline and increased to 7643 (± 3610.9) steps (p < 0.001) during the 12-week intervention. CONCLUSIONS: This pilot study demonstrated feasibility, acceptability, and preliminary efficacy, justifying a larger randomized clinical trial to test efficacy at increasing activity levels. Future studies should examine strategies for maintaining increased activity levels in survivors over time.

Combined pembrolizumab and pegylated liposomal doxorubicin in platinum resistant ovarian cancer: A phase 2 clinical trial.

OBJECTIVE: Pegylated liposomal doxorubicin (PLD) in vitro may have immunomodulatory abilities and preclinical evidence suggests it synergizes with immune checkpoint blockade. We hypothesized that combining PLD and pembrolizumab would be active in patients with platinum-resistant ovarian cancer (PROC). METHODS: This was a single-arm, multi-center phase II trial. Eligible patients had PROC with ≤2 prior lines of cytotoxic therapy for recurrent or persistent disease. Twenty-six patients were enrolled and given pembrolizumab 200 mg intravenously (IV) every 3 weeks and PLD 40 mg/m2 IV every 4 weeks. Patients were assessed radiographically every 8 weeks. The primary endpoint was clinical benefit rate (CBR), defined as complete response (CR) + partial response (PR) + stable disease (SD) ≥24 weeks. The study was powered to detect an improvement in CBR from 25% to 50%, with rejection of the null hypothesis if at least 10 patients achieved clinical benefit. T-cell inflamed gene expression profiles (GEP) and PD-L1 were assessed and correlated with clinical outcome. RESULTS: Twenty-three patients were evaluable for best overall response. The study satisfied its primary endpoint, with 12 patients achieving clinical benefit for a CBR of 52.2% (95% CI 30.6-73.2%). There were 5 PRs (21.7%) and 1 CR (4.3%), for an overall response rate (ORR) of 26.1%. Six patients had SD lasting at least 24 weeks. Combination therapy was well tolerated without unexpected toxicities. CONCLUSIONS: The combination of pembrolizumab and PLD was manageable, without unexpected toxicities, and showed preliminary evidence of clinical benefit in the treatment of platinum resistant ovarian cancer. ORR and median PFS of combination therapy in this study was higher than historical comparisons of PLD alone or anti-PD-1/PD-L1 agents alone. TRIAL REGISTRATION: Clinicaltrials.gov identifier: NCT02865811.

Involvement of caveolin-1 in low shear stress-induced breast cancer cell motility and adhesion: Roles of FAK/Src and ROCK/p-MLC pathways.

Tumor cells translocating to distant sites are subjected to hemodynamic shear forces during their passage in the blood vessels. Low shear stress (LSS) plays a critical role in the regulation of various aspects of tumor cells functions, including motility and adhesion. Beyond its structural role, caveolin-1 (Cav-1), the important component of caveolae, represents a modulator of several cancer-associated functions as tumor progression and metastasis. However, the role of Cav-1 in regulating tumor cells response to shear stress remains poorly explored. Here, we characterized the role of LSS and Cav-1 in mediating cell motility and adhesion on human breast carcinoma MDA-MB-231 cells. We first showed that LSS exposure promoted cell polarity and focal adhesion (FA) dynamics, thus indicating elevated cell migration. Silencing of Cav-1 leaded to a significantly lower formation of stress fibers. However, LSS exposure was able to rescue it via the alteration of actin-associated proteins expression, including ROCK, p-MLC, cofilin and filamin A. Time-lapse migration assay indicated that Cav-1 expression fostered MDA-MB-231 cells motility and LSS triggered cells to rapidly generate new lamellipodia. Furthermore, Cav-1 and LSS significantly influenced cell adhesion. Taken together, our findings provide insights into mechanisms underlying LSS triggered events mediated by downstream Cav-1, including FAK/Src and ROCK/p-MLC pathways, involved in the reorganization of the cytoskeleton, cell motility, FA dynamics and breast cancer cell adhesion.

Acidic pHe regulates cytoskeletal dynamics through conformational integrin ß1 activation and promotes membrane protrusion.

An acidic extracellular pH (pHe) in the tumor microenvironment has been suggested to facilitate tumor growth and metastasis. However, the molecular mechanisms by which tumor cells sense acidic signal to induce a transition to an aggressive phenotype remain elusive. Here, we showed that an acidic pHe (pH 6.5) stimulation resulted in protrusion and epithelial-mesenchymal transition (EMT) of cancer cells, which promoted migration and matrix degeneration. Using computational molecular dynamics simulations, we reported acidic pHe-induced opening of the Integrin dimers (α5ß1) headpiece which indicated the activation of integrin. Moreover, acidic pHe promoted maturation of focal adhesions, temporal activation of Rho GTPases and microfilament reorganization through integrin ß1-activated FAK signaling. Furthermore, mechanical balance of cytoskeleton (actin, tubulin and vimentin) contributed to acidic pHe-triggered protrusion and morphology change. Taken together, these findings revealed that integrin ß1 could be a novel pH-regulated sensitive molecule which confers protrusion and malignant phenotype of cancer cells.

Combined aromatase, CDK4/6 and PI3K blockade using letrozole/abemaciclib/LY3023414 in endometrial cancer.

Several lines of preclinical evidence indicate that combining PI3K and CDK4/6 inhibitors may further enhance the efficacy of hormonal therapy by overcoming de novo and acquired resistance to PI3K and CDK4/6 blockade. We evaluated the combination of abemaciclib, letrozole and LY3023414 (an orally available, selective inhibitor of the class I PI3K isoforms and mTORC1/2) in recurrent endometrial cancer (EC). This study was terminated prematurely after 5 patients initiated protocol therapy due to discontinuation of further development of LY3023414. We report our findings from these patients, including one with recurrent endometrioid EC with AKT1, CTNNB1 and ESR1 hotspot mutations who had previously progressed through letrozole/everolimus and achieved a partial response to letrozole/abemaciclib/LY3023414.

Phase I/II Study of Combined BCL-xL and MEK Inhibition with Navitoclax and Trametinib in KRAS or NRAS Mutant Advanced Solid Tumors.

PURPOSE: MEK inhibitors (MEKi) lack monotherapy efficacy in most RAS-mutant cancers. BCL-xL is an anti-apoptotic protein identified by a synthetic lethal shRNA screen as a key suppressor of apoptotic response to MEKi. PATIENTS AND METHODS: We conducted a dose escalation study (NCT02079740) of the BCL-xL inhibitor navitoclax and MEKi trametinib in patients with RAS-mutant tumors with expansion cohorts for: pancreatic, gynecologic (GYN), non-small cell lung cancer (NSCLC), and other cancers harboring KRAS/NRAS mutations. Paired pretreatment and day 15 tumor biopsies and serial cell-free (cf)DNA were analyzed. RESULTS: A total of 91 patients initiated treatment, with 38 in dose escalation. Fifty-eight percent had ≥3 prior therapies. A total of 15 patients (17%) had colorectal cancer, 19 (11%) pancreatic, 15 (17%) NSCLC, and 32 (35%) GYN cancers. The recommended phase II dose (RP2D) was established as trametinib 2 mg daily days 1 to 14 and navitoclax 250 mg daily days 1 to 28 of each cycle. Most common adverse events included diarrhea, thrombocytopenia, increased AST/ALT, and acneiform rash. At RP2D, 8 of 49 (16%) evaluable patients achieved partial response (PR). Disease-specific differences in efficacy were noted. In patients with GYN at the RP2D, 7 of 21 (33%) achieved a PR and median duration of response 8.2 months. No PRs occurred in patients with colorectal cancer, NSCLC, or pancreatic cancer. MAPK pathway inhibition was observed in on-treatment tumor biopsies. Reductions in KRAS/NRAS mutation levels in cfDNA correlated with clinical benefit. CONCLUSIONS: Navitoclax in combination with trametinib was tolerable. Durable clinical responses were observed in patients with RAS-mutant GYN cancers, warranting further evaluation in this population.

A Phase II, Two-Stage Study of Letrozole and Abemaciclib in Estrogen Receptor-Positive Recurrent Endometrial Cancer.

PURPOSE: Estrogen receptor (ER)-positive endometrial cancers (ECs) are characterized by phosphatidylinositol 3-kinase (PI3K) and receptor tyrosine kinase (RTK)/RAS/ß-catenin (CTNNB1) pathway alterations in approximately 90% and 80% of cases, respectively. Extensive cross-talk between ER, PI3K, and RTK/RAS/CTNNB1 pathways leads to both ligand-dependent and ligand-independent ER transcriptional activity as well as upregulation of cyclin D1 which, in complex with cyclin-dependent kinases 4 and 6 (CDK4 and CDK6), is a critical regulator of cell cycle progression and a key mediator of resistance to hormonal therapy. We hypothesized that the combination of the aromatase inhibitor letrozole and CDK4/6 inhibitor abemaciclib would demonstrate promising activity in this setting. METHODS: We conducted a phase II, two-stage study of letrozole/abemaciclib in recurrent ER-positive EC. Eligibility criteria included measurable disease, no limit on prior therapies, and all EC histologies; prior hormonal therapy was allowed. Primary end points were objective response rate by RECIST 1.1 and progression-free survival (PFS) rate at 6 months. RESULTS: At the data cutoff date (December 03, 2021), 30 patients (28 with endometrioid EC) initiated protocol therapy; 15 (50%) patients had prior hormonal therapy. There were nine total responses (eight confirmed), for an objective response rate of 30% (95% CI, 14.7 to 49.4), all in endometrioid adenocarcinomas. Median PFS was 9.1 months, PFS at 6 months was 55.6% (95% CI, 35.1 to 72), and median duration of response was 7.4 months. Most common ≥ grade 3 treatment-related adverse events were neutropenia (20%) and anemia (17%). Responses were observed regardless of grade, prior hormonal therapy, mismatch repair, and progesterone receptor status. Exploratory tumor profiling revealed several mechanistically relevant candidate predictors of response (CTNNB1, KRAS, and CDKN2A mutations) or absence of response (TP53 mutations), which require independent validation. CONCLUSION: Letrozole/abemaciclib demonstrated encouraging and durable evidence of activity in recurrent ER positive endometrioid EC.

Knowledge and psychosocial impact of genetic counseling and multigene panel testing among individuals with ovarian cancer.

In a sample of individuals with ovarian cancer, we aimed to (a) identify factors associated with the psychosocial impact of genetic counseling and multigene panel testing, (b) identify factors associated with cancer genetics knowledge, and (c) summarize patient-reported recommendations to improve the genetic counseling and multigene panel testing process. Eligible participants in this secondary analysis of quantitative and qualitative survey data were English-speaking adults with ovarian cancer. Psychosocial impact was assessed using the Multidimensional Impact of Cancer Risk Assessment (MICRA) questionnaire. Knowledge of cancer genetics was assessed using the KnowGene scale. Significant predictors of MICRA and KnowGene scores were identified using multiple regression. Open-ended survey item responses were analyzed using conventional content analysis. Eighty-seven participants met eligibility criteria. A positive genetic test result was associated with greater adverse psychosocial impact (B = 1.13, p = 0.002). Older age (B = - 0.07, p = 0.044) and being a member of a minority racial or ethnic group (B = - 3.075, p = 0.033) were associated with lower knowledge, while a personal history of at least one other type of cancer (B = 1.975, p = 0.015) was associated with higher knowledge. In open-ended item responses, participants wanted clinicians to assist with family communication, improve result disclosure, and enhance patient and family understanding of results. A subset of individuals with ovarian cancer who receive a positive genetic test result may be at risk for adverse psychosocial outcomes. Tailored cancer genetics education is necessary to promote the equitable uptake of targeted ovarian cancer treatment and risk-reducing therapies. Interventions to enhance patient-clinician communication in this setting are a research priority.

Health-related quality of life, patient-centred communication and self-efficacy in ovarian cancer: a mediation analysis.

OBJECTIVE: To assess the role of self-efficacy as a mediator of the association between patient-centred communication (PCC) and health-related quality of life (HRQoL) in a sample of participants with ovarian cancer. METHODS: English-speaking adults with ovarian cancer completed a cross-sectional survey. We assessed self-efficacy with the Self-Efficacy for Managing Chronic Disease scale, PCC with the Patient-Centred Communication in Cancer Care-36, and HRQoL with the Functional Assessment of Cancer Therapy-General. We used the PROCESS macro to calculate regression coefficients for the total effect of PCC on HRQoL and direct effect of PCC on HRQoL. We calculated a 95% CI for the indirect effect of PCC on HRQoL using 10 000 bootstrapped samples. RESULTS: The total effect of PCC on HRQoL (9.47, 95% CI 6.21 to 12.74) was greater than the direct effect of PCC on HRQoL (3.47, 95% CI 0.73 to 6.21). The indirect effect of PCC on HRQoL was 6.00 (95% CI 3.56 to 8.95). Self-efficacy explained approximately 63.4% of the association between PCC and HRQoL. CONCLUSIONS: Self-efficacy partially mediated the association between PCC and HRQoL. Self-efficacy is a potential target for communication interventions that aim to improve HRQoL. Research to validate this finding in the setting of a randomised trial is warranted.

Association of Operability With Post-Treatment Mortality in Early-Stage Non-Small Cell Lung Cancer.

BACKGROUND: Operability is both a crucial determinant in treatment selection and a potential confounder in analyses comparing surgery with non-surgical approaches such as stereotactic body radiotherapy (SBRT). We aimed to assess the association between operability status and intervention with post-treatment mortality in early-stage non-small cell lung cancer (NSCLC). PATIENTS AND METHODS: We defined four groups of patients with cT1-T2N0M0 NSCLC diagnosed 2010 to 2014 from the National Cancer Database: SBRT patients deemed operable vs. inoperable and surgery patients receiving open vs. minimally-invasive approaches. Mortality rates at 30, 60, and 90 days post-treatment were calculated and compared. RESULTS: We abstracted 80,108 patients, 0.8% undergoing SBRT and operable, 13.2% undergoing SBRT and inoperable, 52.4% undergoing open surgery, and 33.7% undergoing minimally-invasive surgery. Mortality rates were highest among open surgery patients and lowest among operable SBRT patients (2.0% vs. 0.2% at 30 days and 3.7% vs. 0.7% at 90 days), with intermediate results in the other two groups. These findings persisted on multivariate Cox regression: compared to patients undergoing minimally-invasive surgery, mortality risk was highest among open surgery patients (30 days HR 1.32, 95%CI 1.16-1.51; 90 days HR 1.36, 95%CI 1.24-1.50; both P < .001) and lowest among operable SBRT patients (30 days HR 0.09, 95%CI 0.01-0.64; 90 days HR 0.15, 95%CI 0.05-0.46; both P ≤ .016). These associations were maintained in a propensity score-matched subset. CONCLUSION: Operable patients undergoing SBRT experience minimal post-treatment mortality compared to their inoperable counterparts. These findings illustrate the potential for confounding by operability to bias results in cohort studies that compare surgical vs. non-surgical approaches in early-stage NSCLC.