Citations

Abstract Background: Residual disease after neoadjuvant chemotherapy (NAC) in breast cancer (BC) confers poor outcomes. Trastuzumab emtansine (T-DM1) is approved for HER2+ patients with residual disease after NAC. However, many patients still develop recurrence. H2NVAC is a multi-epitope CD4 helper T cell activating vaccine that includes a pool of 4 degenerate HER2-derived HLA-DR epitopes admixed with GM-CSF. Our previous phase I trial showed that this vaccine was safe and generated robust, long-lasting T and B cell immune responses. Method: We conducted a safety run-in phase of H2NVAC in combination with T-DM1 in stage II-III HER2+ BC with residual disease after NAC. Patients were treated with H2NVAC and T-DM1 for 6 cycles, followed by 2 boosters at 3 and 12 months. Dose-limiting toxicity (DLT) was defined as any grade (G) ≥ 3 toxicity occurring within 21 days after the first vaccination. Results: 20 patients were enrolled (median age 51; 27-69 years), including 80% White and 15% Black. 90% had hormone receptor-positive disease. There was no DLT observed in the safety run-in cohort. All adverse events (AEs) during the DLT period were grades 1 and 2, with fatigue being the most common (60% G1, 5% G2), followed by peripheral sensory neuropathy (55% G1, 5% G2), and injection site reaction (50% G1). Across all treatment cycles, the 10 most common AEs that were at least possibly related to treatment in all cycles are summarized in the table below. The injection site reaction was the most common AE, with 85% G1 and 15% G2. Conclusion: H2NVAC, in combination with T-DM1, was safe, with a favorable side effect profile. There was no DLT observed. The most common AE was injection site reaction, with the majority being G1. A multicenter, randomized, placebo-controlled, phase II trial of H2NVAC vs. placebo in combination with trastuzumab emtansine is currently ongoing through the ACCRU consortium (NCT04197687). Adverse Events Grades 1 2 N % N % Injection site reaction 17 85.0 3 15.0 Aspartate aminotransferase increase 13 65.0 Alanine aminotransferase increase 9 45.0 Fatigue 7 35.0 2 10.0 Peripheral sensory neuropathy 7 35.0 2 10.0 Alkaline phosphatase increase 8 40.0 Nausea 7 35.0 1 5.0 Arthralgia 7 35.0 Myalgia 5 25.0 1 5.0 Platelet count decrease 6 30.0 Citation Format: Saranya Chumsri, Sharmila Giri, Andy J. Ness, David W. Hillman, Nadine Norton, Davitte Cogen, Brian M. Necela, Aziza Nassar, Donald W. Northfelt, Pooja Advani, Rohit Rao, Kostandinos Sideras, Alvaro Moreno-Aspitia, Brenda J. Ernst, Kathryn J. Ruddy, Matthew P. Goetz, Keith L. Knutson. Safety and tolerability of multi-epitope HER2 peptide vaccines in combination with trastuzumab emtansine in HER2-positive breast cancer patients with residual disease after neoadjuvant chemotherapy [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts); 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84(6_Suppl):Abstract nr 5005.

Abstract Introduction: MYC+BCL2+ double expression (DE) is a biomarker for poor prognosis in diffuse large B-cell lymphoma (DLBCL), likely due to the cooperation between MYC and BCL2 oncoproteins in tumor cells. However, as generally MYC and BCL2 are separately assessed on two different slides by immunohistochemistry (IHC), MYC+ and BCL2+ results are from different cells. With the WHO-recommended cutoffs, ≥40% for MYC and ≥50% for BCL2 (sum < 100%), there is chance that the so-called DE comes from non-overlapping regions of the tumor (not single-cell DE). Moreover, tumor expression scores based on morphology assessment often vary among pathologists. In this study, we performed fluorescent multiplex IHC (fmIHC) using a MultiOmyxTM immunofluorescence platform (NeoGenomics Laboratories, Inc.) to determine single-cell MYC and BCL2 co-expression for prognostic analysis in DLBCL. Patients and Methods: Co-expression of MYC, BCL2, and 11 immunophenotypic markers by fmIHC was digitally quantified for 547 patients with DLBCL. Percentage of cells with MYC/BCL2 double or single expression was calculated for various cell types. Prognostic analysis was performed for de novo DLBCL cases, including 108 patients treated CHOP chemotherapy, and 356 patients treated with rituximab (R)-CHOP. Results: First, although MYC and BCL2 were expressed in multiple cell types, the vast majority (>90%) of MYC+BCL2+ DE cells were lymphoma cells. Frequencies of MYC and BCL2 co-expression were consistent with random distribution of independent MYC/BCL2 expression in positive cases. The activated B-cell-like subtype compared with the germinal center B-cell-like subtype had a significantly higher mean percentage of MYC+BCL2+ DE, but not single BCL2 or MYC expression, in PAX5+ cells. Second, in both the R-CHOP and CHOP cohorts, high percentages of DE in PAX5+ cells and in all DAPI+ cells were associated with significantly poorer survival of DLBCL patients. Very high percentage of single BCL2 expression in PAX5+ cells was also associated with poorer survival, however, only in a small number of patients in both cohorts. Only in the R-CHOP cohort, high single MYC expression in PAX5+ cells (in a significant proportion of the cohort) was associated with significantly poorer overall survival. In the R-CHOP cohort, eight cases had MYC/BCL2 double hit by FISH, including 3 cases with MYC/IGH fusions (DE) and 5 cases with MYC/non-IGH rearrangements (only one DE). The exclusion of these double hit cases did not impact the significance of DE and single MYC+ expression. Summary: True MYC+BCL2+ double protein expression at the single cell level is predominantly in lymphoma cells, and associated with significantly poor survival of DLBCL patients. Our results suggest high cutoffs for common MYC/BCL2 IHC to identify true double expressor lymphoma. Citation Format: Zijun Yidan Xu-Monette, Yong Li, Qingyan Au, Harry Nunns, Wenyu Shi, Alexandar Tzankov, Carlo Visco, Govind Bhagat, Eric Hsi, Xiaoxian X. Zhao, Karen Dybkaer, April Chiu, Wayne Tam, Youli Zu, Fredrick B. Hagemeister, Andrew Song, Michele Pellegrino, Heounjeong Go, Maurilio Ponzoni, Andrés Ferreri, Michael B. Møller, Benjamin Parsons, J. Han van Krieken, Miguel A. Piris, Jane N. Winter, Mingzhi Zhang, Bing Xu, Ken H. Young. Single-cell double expression of MYC and BCL2 proteins by fluorescent multiplex IHC is mainly in lymphoma cells with significant prognostic impact in large B-cell lymphoma while suggesting high cutoffs for routine IHC [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts); 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84(6_Suppl):Abstract nr 6418.

Abstract Cytokines mediate strong immunomodulatory effects in cancer. Elraglusib (9-ING-41), an inhibitor of GSK-3, is a potent antitumor and immune-modulatory agent in phase 2 clinical trials for the treatment of various cancers. Here, we examined the immune environment of elraglusib-treated cancer patients by measuring peripheral blood protein levels to explore whether the expression level of cytokines/chemokines/soluble cell receptors/growth factors (CCSG) is correlated with clinical outcome. Using a customized Luminex platform, the expression of forty CCSG hypothesized to be linked to GSK-3 activity was assessed in pre-dose plasma samples obtained from 45 cancer patients with relapsed/refractory metastatic disease (NCT03678883; the 1801 trial). All patients in the 1801 trial were treated with elraglusib (dose range: 1-15 mg/kg) either as a single agent (Part 1; n=21) or in combination with chemotherapy (Part 2; n=24). Pre-dose peripheral blood protein levels were examined as binary predictors of clinical outcome using optimal cutoff points determined by maximally selected rank statistics. In the aggregate Part 1 and 2 populations (n=45), we identified 13 CCSG that significantly stratified the cohort by overall survival (OS). High pre-dose levels of CD95 and TNFRSF10C were associated with better OS. CD95 was a better prognostic of OS than TNFRSF10C (HR: 2.27, 95% CI: 1.10-4.67, p-value: 0.023). Low pre-dose levels of 11 CCSG were also significantly associated with favorable OS, with IL-8 being the most predictive (HR: 0.137, 95% CI: 0.0545-0.346, p-value: <0.0001). Part 1 and 2 predose samples were also analyzed separately, and many of the biomarkers identified in the aggregate analysis retained significance in the separated analysis. In Part 1, CXCL5, IFN-alpha, and IL-18 emerged as unique markers, and in Part 2, CCL22 was the single unique marker.The results of our exploratory study identified several putative biomarkers of elraglusib clinical benefit and demonstrated potential immunomodulatory mechanisms of elraglusib that will be used to inform the further clinical development of elraglusib for the treatment of metastatic cancer. Citation Format: Taylor Weiskittel, Kelsey Huntington, Leiqing Zhang, Austin Koukol, Benedito A. Carneiro, Hu Li, Andrey Ugolkov, Wafik El-Deiry, Andrew Mazar. Identification of potential immune biomarkers for GSK-3 inhibitor elraglusib (9-ING-41) in patients with relapsed/refractory metastatic cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts); 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84(6_Suppl):Abstract nr 6426.

Abstract Prostate cancer (CaP) is a heterogeneous disease characterized by features of non-aggressive, slow-growing disorders to fast-growing disease. Men of African ancestry have disproportionately higher incidence and mortality rates for CaP than men of European ancestry. While there is evidence for a higher genetic predisposition for incidence of CaP in men of African ancestry compared to men of European ancestry, there is paucity of molecular biology and transcriptomic studies on the role of Human endogenous retroviruses (HERVs) in relation to CaP-associated genes in CaP pathogenesis and prognosis. In this study, we performed bulk RNA sequencing (RNA-seq) on formalin-fixed paraffin-embeded (FFPE) CaP samples from Nigerian CaP patients to investigate the expression significance of HERV-R in relation to FOXA1, TMPRSS2, BAZ1B, KMT2D, ATF4 and BRAF genes. Based on this findings, we used immunohistochemistry (IHC), enzyme-linked immunosorbent assay (ELISA) and immunofluorescence (IF) to confirm the expression pattern of the HERV-R and FOXA1, TMPRSS2, BAZ1B, KMT2D, ATF4 and BRAF proteins on 45 FFPE CaP and blood plasma samples, and 5 CaP-free samples from patients in Zaria, Nigeria. Most of these patients were longitudinally followed from 2017 to date. The DESeq2 procedure was used for data processing, analysis, and differential expression analysis of the aforementioned genes. We found a significant expression of HERV-R in relation with FOXA1, TMPRSS2, BAZ1B, KMT2D, ATF4, CCND1 and BRAF in the CaP from rural Africans in Nigeria. HERV-R expression was found to be associated with increased PSA level, higher Gleason grade and poor prognosis of CaP. A CaP sample from an 80-year-old patient that was histologically diagnosed to have no malignancy seen despite high PSA level of >100 and poor disease outcomes shows a significant cytoplasmic expression of HERV-R, indicating that HERV-R may serve as an important biomarker for early detection. Unfortunately, we lost the 80-year-old patient to late detection before revisiting his case for proper histological diagnosis and management. In addition, some histologically diagnosed BPH samples that are apparently reported to be CaP-free show stromal cells expression of HERV-R and in some cases show expression of HERV-R in the prostatic glandular areas. In contrast, stromal cells of the CaP samples show no expression of HERV-R, but strong expression in the glandular areas. This may implicate a gradual transition from benign prostatic lesion to malignant prostatic disease. HERV-R expression in CaP may have a relationship with BRAF, CCND1, FOXA1, TMPRSS2 and ATF4 genes. These findings combined together, underscore the importance of the expanded concept of HERV-R expression and CaP associated genes in early detection of CaP and prognosis. Citation Format: Faruk Mohammed, Konrad Stawiski, Halimatu Sadiya Musa, Sani Kamarudeen Owolabi, Sani Abubakar, Solomon O. Rotimi, Adoke Kasimu Umar, Yawale Iliyasu, Ahmad Bello, Folakemi T. Odedina, Clayton C. Yates, Kevin Petrie, Franklin W. Huang, Sani Ibrahim. Co-expression of HERV-R, CCND1, BRAF, FOXA1, TMPRSS2, ATF4 and low expression of BAZ1B and KMT2D is associated with early detection and poor prognosis of prostate cancer in African Black men from Nigeria [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts); 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84(6_Suppl):Abstract nr 6432.

Abstract Background: Benefit from single-agent immune checkpoint inhibitor has been observed in 5-10% of the patients with microsatellite stable (MSS) gastrointestinal (GI) cancers. However, a reliable predictive marker to immune checkpoint inhibitor has not been discovered in this patient population. We sought to assess the incidence of mismatch repair (MMR) gene alterations and their association with tumor mutational burden (TMB) in MSS GI cancers. Methods: This is a retrospective cohort study of patients with advanced GI cancer who had molecular profiling of the tumor using either Guardant360 blood-based or Tempus tissue next generation sequencing (NGS) platforms between 2020 and 2023. We assessed four MMR genes including MLH1, MSH2, MSH6 and PMS2 for alterations. Continuous variables were summarized as median and interquartile range (IQR) and compared using Mann-Whitney test. Categorical variables were summarized as counts and proportions and compared using Fisher’s exact test. Results: A total of 2920 patients with Guardant360 were included with a median age of 65 (IQR: 56-73) years. 870 (30%) patients had pancreas cancer; 846 (29%) patients had colorectal cancer; 688 (24%) patients had biliary tract cancers; and the rest had other GI cancers. Among patients evaluable for microsatellite instability (MSI) status, 58 patients (2%) had MSI-high GI cancers, 31 (53%) of whom had MMR gene alterations. 2445 (98%) patients had MSS GI cancers, 130 (5.3%) of whom had MMR gene alterations. Patients with MSS GI cancers bearing MMR gene alterations had a median age of 70 (IQR: 62-75) years, significantly older than those without MMR gene alterations (p<0.001). In addition, patients with MMR gene alterations had significantly higher median blood TMB of 11 (IQR: 7.4-16) mut/Mb compared to 7.7 (IQR: 4.8-11) mut/Mb in patients without MMR gene alterations. In MSS GI cancers, MMR gene alterations are more commonly associated with the presence of alterations in APC (p=0.03), TP53 (p=0.01), CTNNB1 (p<0.001) and SMAD4 (p=0.01). 1453 patients with GI cancer and Tempus tissue NGS data were included as a validation cohort. They had comparable demographics with the Guardant360 cohort. 14 (1.6%) of 896 patients with MSS GI cancers had MMR gene alterations, significantly fewer (p<0.001) than those found in the Guardant360 cohort. Patients with MMR gene alterations and wild type POLE had significantly higher (p=0.001) median TMB of 9.8 (IQR: 4.8-14) mut/Mb compared to 4.7 (IQR: 3.2-6.3) mut/Mb in patients without MMR gene alterations. Conclusions: MMR gene alterations can be identified by clinical NGS platforms in a small proportion of patients with MSS GI cancers. They are associated with elevated TMB, which may suggest a hypermutated profile serving as a basis for potential role of immune checkpoint inhibitor in MSS GI cancers. Citation Format: Conor D. O'Donnell, Mojun Zhu, Hao Xie. The association of mismatch repair gene alterations with elevated tumor mutational burden in microsatellite stable gastrointestinal cancers [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts); 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84(6_Suppl):Abstract nr 6469.

Abstract Cholangiocarcinoma (CCA) is an aggressive epithelial malignancy of the bile ducts. Recent reports have suggested a rise in the incidence of CCA globally. Current treatments for CCA have limited effectiveness, with only 20-30% response rates in patients with advanced cancer. Thus, there is a growing need to investigate new therapeutic targets for CCA. The tumor microenvironment (TME) is a potential target for novel therapies. The TME plays an important role in progression and metastasis of cancer through facilitating immune escape. Recent studies have demonstrated potential roles for heparan sulfate proteoglycans (HSPGs) in tumorigenesis. Sulfatase 2 (SULF2) is a heparan sulfate editing sulfatase that removes the 6-O sulfate moiety within the heparan sulfate (HS) chains and alters the affinity of HS chains for growth factors and cytokines and their receptors, thus modulating HSPG function in cell signaling pathways. HSPG specific sulfatases have been recently identified as a potential therapeutic target in CCA. We aimed to assess the effects of anti-Sulfatase-2 antibody on immune cells in the tumor microenvironment of syngeneic CCA xenografts in C57BL6 mice. Mice bearing syngeneic CCA xenografts were treated with an anti-sulf2 antibody, and the tumors compared to untreated control xenografts. After treatment, the tumors were harvested and analyzed by Cytometry by time of flight (Cytof) to identify changes in the types and numbers of immune cells in the tumor xenografts. Treatment with anti-sulf2 antibody resulted in a decrease in immunosuppressive cells such as tumor associated macrophages (TAMs) and myeloid derived suppressor cells (MDSC) compared to the control. There was also an increase in anti-tumor cells such as T-cells and NK cells, suggesting that suppressing sulf-2 in the microenvironment can shift the TME toward an anti-tumorigenic rather than a pro-tumorigenic environment. In summary, our work demonstrates the potential to target Sulfatase 2 as a therapeutic mechanism for immunomodulation of the tumor microenvironment. Future experiments to determine the relationship between specific clinical phenotypes and the number, activities and types of immune cells seen in the TME, and experiments in other hepatobiliary cancers models, such as hepatocellular carcinoma and gallbladder cancer, will be conducted. Citation Format: Tayla R. Brooks, Nellie Campbell, Melanie Keim, Lewis R. Roberts. Modulating the immune response in cholangiocarcinoma: Targeting sulfatase-2 for therapeutic intervention [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts); 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84(6_Suppl):Abstract nr 6525.

AbstractBackgroundImmunoglobulin (IG) therapy is widely used to treat primary and secondary immune deficiencies and as immunomodulatory agent for various disorders. There is great concern that shortages of IG may rise, potentially affecting medical treatment options.Study Design and MethodsAn international survey was developed to study how intravenous immunoglobulins (IVIGs) are used and managed within hospitals in case of shortages. Study data were collected and managed using REDCap electronic data capture tools hosted by the Biomedical Excellence for Safer Transfusion (BEST) Collaborative. The survey was directed to hospital pharmacists and blood bank transfusion professionals and disseminated through members of the BEST Collaborative network.ResultsSurvey respondents from institutions in the USA, Canada, Europe, Japan, and Australia (n = 13) confirmed that the primary specialties utilizing IG are neurology, hematology, and immunology. More than 60% of respondents reported IG supply shortages, but mitigation strategies were not well developed.DiscussionAs IG is the leading driver in plasma demand, more studies are needed to understand current and future demand for IG from the clinical perspective. Necessity lies in establishing clinical guidance to address shortages.

Abstract Black men hold the highest prostate cancer burden among all ethnicities; thus, there is an urgent need for research to inform the development and implementation of a culturally tailored intervention to reduce disparities and improve outcomes. In response, the Inclusive Cancer Care Research Equity (iCCaRE) Consortium was created to advance health equity and reduce disparities in prostate cancer. Addressing the unique needs of Black men require a genuine bidirectional relationship between scientist and the community. In the Black community, faith-based organizations are respected institutions advocating for health equity and justice. Given their vital role as community health gatekeepers, the iCCaRE Consortium partners with faith-based organizations. Rooted in community engaged research (CER), we conducted an environmental scan through stakeholder meetings to discuss the prevailing challenges and opportunities to meet the needs of the Black community along the prostate cancer care continuum. iCCaRE investigators including Partnership Engagement Services (PES) core partnered with faith-based organizations to ensure and advance community responsive cancer prevention. Together, with our faith-based leaders (N=18), we identified gaps including issues associated with the care continuum from screening to diagnosis and from treatment to survivorship; disparities according to health coverage and social determinants of health, and best practices to assist patients including care coordination, patient navigation, digital innovations, and programs offered by patient advocacy organizations. In response to the needs of the community and the strengths of faith-based organization, we prioritized our initial focus on increasing community prostate cancer literacy and activation using co-design educational infographics for both traditional and technology-based communication platforms. The infographics provided evidence-based facts about prostate cancer burden in the Black community; and using a call to action approach, we emphasized the importance of taking action for life saving screening, prevention and healthy lifestyle. Taking action in prostate cancer symptom recognition, survivorship care, and quality care. Also, co-designed infographics were created for clinical studies and biospecimen awareness and participation and the importance of advocacy and equitable care. Another component incorporated face to face trainings and presentations to enhance their knowledge of cancer screening tools, epidemiology of prostate cancer, and pathways to care. This presentation highlighted the first step towards community based intervention development, implementation and dissemination towards equity and justice for prostate cancer prevention and patient/survivor improvements for Black men. Citation Format: James C. Morrison, Kimlin T. Ashing, Gaole Song, Timethia J. Bonner, Che Ngufor, Getachew Dagne, Arnold Merriweather, John McCall, Ewan Cobran, Cassandra N. Moore, Fornati Bedell, Rotimi Oladapo, Floyd B. Willis, Runcie Chidebe Chidebe, Noreen A. Stephenson, JoAnne S. Oliver, Vinessa Gordon, Folakemi Odedina. iCCaRE engagement of faith-based organizations to co-create and co-disseminate infographics addressing disparities in prostate cancer literacy and clinical and biospecimen studies [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts); 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84(6_Suppl):Abstract nr 808.

Abstract Introduction: Black men have the highest prostate cancer (CaP) mortality rates. The reason for this disparity is multifaceted, including the barriers that they face at the individual, provider, and health system levels. To address these challenges the iCCaRE for Black Men Consortium uses a multi-level approach to disseminating CaP information. This approach is rooted in research which shows that Black men prefer to receive information through multi-media channels tailored to their needs. In addition, studies have reported that CaP survivors were viewed as credible sources of information. This presentation reports on how iCCaRE Consortium is bridging the digital divide in minoritized communities to disseminate CaP information in a way that is meaningful to the community. Methodology: iCCaRE uses a multimedia method to reach Black men. This includes twitter post, Facebook, YouTube, ecancer and community lunch and learns. In addition to social media, we have partnered with LitTV Network, a locally owned digital TV platform, on which we have iCCaRE TV. On Lit TV network we have the ability to reach 11,000 homes in our catchment area. Furthermore, the consortium has produced informational flyers that are disseminated at outreach events and at the American Legion Post 197. On the twitter page the consortium post: (1) 2 scientific publications per day authored by members of the consortium, (2) 2 weekly “Did You Know” facts about prostate cancer with sources attached, (3) 2 weekly url post sharing a link to a video from the iCCaRE consortium YouTube page and (4) clips of CaP survivors sharing their experiences. On the YouTube page we currently have: videos series of a CaP survivor who is also a physician scientist, interview series with MPIs and members of the consortium, CaP survivor series including a barbershop interview with a survivor. Results: The iCCaRE Consortium multimedia efforts have a global reach, in less than a year we have gained 102 twitter followers. On average the twitter page receives 8,700 impressions during the CaP awareness month in September the twitter page garnered over 14,000 impressions. Our videos on the ecancer platform have a combined global view of 341 representing countries such as the United States, Nigeria, Cameroon, United Kingdom, Macedonia, and Mexico. The American Legion Post 197 in North Jacksonville has served a cumulative of 229 people through outreach and educational event called lunch and learns. Our YouTube channel has had almost 100 views in its first month of being active. Conclusion: Using a multi-level approach to reduce the burden of CaP for Black men is vitally important; without such efforts the disparate thread in mortality will continue to persist. Meeting Black men through the mediums they use for gathering health information removes barriers, increases access and will aid in the fight against CaP for Black Men. Citation Format: Vinessa Gordon, Folakemi Odedina, Kimling Tam Ashing, Arnold Merriweather, Roxana Dronca, Che Ngufor, Solomon Rotimi, Ernest Kaninjing, Abimbola Odedina, John McCall, Anthony Hill, Ayinde Yahaya, Emmanuel Agboola. Fighting prostate cancer with a multimedia approach [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts); 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84(6_Suppl):Abstract nr 818.

Abstract The objective of our study is to evaluate the feasibility, acceptance, and impact of patient-centered home care (PCHC) on patient reported outcomes (PROs) and health-related quality of life (HQoL) of black men with advanced prostate cancer (CaP). Meeting patients where they are and offering treatment in or closer to their homes reduce psychological distress and increase treatment compliance, especially for disadvantaged patients in rural areas, those on low incomes, with poor access to transport, elderly and people with disabilities. In 2023, Mayo Clinic has developed the Cancer Care Beyond Walls (CCBW) program, a cancer care delivery model that integrates virtual with in facility treatment and provides a package of care to support administration of cancer-directed therapy (chemotherapy, immunotherapy, hormonal therapy) and/or supportive care in the patients’ homes. Our study will assess if patients and families are comfortable with cancer therapy at home, what factors influences their decision, and use this data to inform our understanding of the proportion of the black men with advanced CaP who would be willing to receive and would benefit from this level of care at home. Patients with advanced CaP from our practice requiring active anti-cancer therapy are administered a brief questionnaire regarding preference for location of therapy at the infusion center or in the home, with perceived difficulties and advantages of each approach. A focus group session with prostate cancer survivor advocates is also conducted to capture patients’ thoughts, feelings, attitudes, and questions towards cancer treatments being administered at home versus a hospital setting. In addition, we are conducting an observational study of 20 patients with advanced prostate cancer receiving supportive care/symptom management and/or anti-cancer therapy in the home as part of the Mayo Clinic CCBW Program to assess the safety of cancer directed therapy when administered at home by a home health provider with remote patient monitoring and command center support, and establish the impact of home cancer treatment administration on patient-reported function and global health/quality of life, patient-reported symptoms, clinical outcomes, and cost of care. Successful completion of the project will deliver data on patient understanding and acceptability of cancer care at home, strategies for overcoming barriers to care for underserved communities, and the foundation from which we discover, translate and apply new knowledge in administering personalized care to vulnerable populations. Citation Format: Roxana S. Dronca, Folakemi Odedina, Che Ngufor, Kimlin Ashing, Ernest Kaninjing, Solomon Rotimi. Feasibility of patient-centered home care (PCHC) to reduce disparities in high-risk black men with advanced prostate cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts); 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84(6_Suppl):Abstract nr 819.