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161 Background: Survival has significantly improved for patients with head and neck cancer (HNC) in the last decade in the US. Unfortunately, social determinants of health continue to impact patient outcomes. HPV vaccine uptake and access to quality end-of-life care vary notably between geographic areas. We investigated potential disparities in rural-urban age-adjusted mortality rates (AAMRs) and place of death for individuals with head and neck cancer (HNC). Methods: We used the CDC WONDER database to identify patients who died from HNC between 2003 and 2019 within the following 2013 US Census population classifications: large metropolitan (≥1 million), medium/small metropolitan (50,000-999,999), and rural areas (< 50,000). AAMR (per 100,000 individuals) was stratified by geographic area, age, and race/ethnicity. Annual percentage changes (APC) in AAMR were estimated with linear regression models of the log-scale AAMR (including population size as weights) and differential changes over time by geographic area were assessed with interaction tests. Odds ratios (OR) for the association between each place of death and individual-level characteristics were calculated using logistic regression, adjusting for year of death. Results: From 2003 to 2019, 221,861 deaths related to HNC occurred (48.5% large metropolitan, 31.9% medium/small metropolitan, 19.7% rural). Total AAMR declined from 6.7 to 5.8 during this period. Rural areas consistently had a higher AAMR and also slower annual improvement over time (APC –0.11; 95% CI, –0.36 to 0.13; p < 0.001) than medium/small metropolitan (APC –0.51; 95% CI, –0.78 to 0.24) and large metropolitan areas (APC –1.19; 95% CI, –1.39 to –1.0; p < 0.001). Non-Hispanic (NH) Black patients had the highest overall AAMR, but quickest annual improvement (APC –2.91; 95% CI, –3.28 to –2.55; p < 0.001) compared to Hispanic (APC -1.42, 95% CI, -1.9 to -0.93) and NH White patients (APC –0.26, 95% CI, –0.44 to 0.07). Individuals in rural areas died less often in a hospice facility (5.6% rural vs 10.8% large metropolitan vs 12% medium/small metropolitan) and slightly more often at home (46.3% rural vs 40.1% large metropolitan vs 43.7% medium/small metropolitan). Relative to patients in rural areas, patients in large metropolitan (OR 1.77; 95% CI, 1.74 to 1.81) and medium/small metropolitan areas (OR 2.27; 95% CI, 2.23 to 2.31) had higher odds of dying in a hospice facility compared to a medical facility. Conclusions: Rural residents with HNC experienced higher mortality rates and had lesser improvement compared to urban areas, with notable sociodemographic differences, and disparities in place of death. Public health interventions to combat health inequities for patients with HNC are required. Further, as EOL care is increasingly complex and the role of unpaid caregiving burdensome, policy interventions targeted to support disadvantaged populations and communities are urgent and necessary.

e20013 Background: Autologous stem cell transplantation (ASCT) has improved long-term survival for many patients with multiple myeloma (MM), but not all patients respond to ASCT favorably, and many experience disease relapse. Our goal was to explore various disease parameters in patients with MM that might be associated with adverse outcomes after receiving ASCT. Methods: We performed a retrospective medical record review of adult patients with MM who underwent ASCT at Henry Ford Hospital between January 1, 2010 and November 1, 2020. Age, sex, international staging system stage, type of induction therapy, bone marrow cytogenetics and/or fluorescence in situ hybridization, International Myeloma Working Group (IMWG) treatment response criteria categories before ASCT, and the use of maintenance therapy were collected. Outcomes analyzed were time to relapse (TTR) and overall survival (OS). Cox regression analysis was performed. Results: A total of 321 patient records were analyzed: 194 (60.4%) patients were < 65 years old; 185 (57.6%) were men; 162 (50.5%) were Black, and 140 (43.6%) were White. IMWG treatment response categories before ASCT included 250 (78.2%) patients with partial response (PR) and very good partial response (VGPR) combined, and 40 (12.5%) with complete response (CR). There were 69 (21.4 %) patients classified with high-risk cytogenetics. Commonly used induction therapies included 96 (29.9%) patients receiving bortezomib/lenalidomide/dexamethasone, 21 patients (9%) receiving lenalidomide/dexamethasone, 80 patients (24.9%) receiving bortezomib/dexamethasone, and 30 patients (9.3%) receiving cyclophosphamide/bortezomib/dexamethasone, while other patients received a combination of other induction therapies. Mean time from ASCT and last follow-up date was 3.94 years. The overall mean TTR was 29.4 months and OS was 44.8 months. Univariate analysis showed that pre-ASCT treatment response status of combined PR/VGPR was associated with higher hazard of dying than CR (hazard ratio 3.03; 95% CI, 1.23-7.46); however, multivariate analysis showed that PR/VGPR status before ASCT was not significantly associated with increased TTR compared to CR (hazard ratio 1.29; CI, 0.65-2.59). Patients with pre ASCT CR status had longer OS than those with PR/VGPR status (hazard ratio 2.75; CI, 0.995-7.61; p < 0.05). No other variables, including cytogenetic risk were associated with a difference in OS or TTR. Conclusions: Being at CR status before receiving ASCT may indicate a reduced risk of death in MM patients compared to PR and VGPR status, regardless of upfront therapies. Since multiple factors, including treatment type, impact CR status in patients with MM, we believe that studying evolving risk-adapted front-line therapies will help guide optimized treatment strategies to improve overall survival.

e18753 Background: Vaccination against COVID-19 decreases the risk of severe COVID 19 disease, hospitalization and death. Despite widespread recommendation from different cancer societies, vaccine hesitancy remains an issue in developing countries. Methods: Records of patients with cancer who received COVID-19 vaccination from March 1, 2021 and December 1, 2021, at Todua Clinic were analyzed retrospectively. Patient reported adverse effects (AE), vaccine related treatment interruptions, COVID -19 infection, and hospitalization rates were recorded. Results: A total of 1728 patients with cancer were treated at Todua Clinic during the study period. Of 177 (10%) patients who received Covid-19 vaccine, 63% were female and 34% were male. All patients were White. Mean age was 62 years. Majority of patients had solid cancer (93%) and only 7% had hematologic malignancies. A total of 76 (43%) patients had metastatic disease. Nearly half (47%) of patients were receiving cytotoxic chemotherapy, while others were receiving different treatment modalities (hormone therapy (33%), concurrent chemo-radiation (9%), chemo-immunotherapy (4%), targeted therapy (3%), immune therapy (2%), radiation therapy (2%)). Majority of the patients were vaccinated during the treatment process (61%), while 18% received covid-19 vaccine prior to treatment initiation and 21% patients received the vaccine after completion of treatment. A total of 124 patients (70%) were vaccinated with Pfizer-BioNTech, 33(19%) patients had received Sinopharm (Beijing), 14(8%) patients were vaccinated with The Oxford/AstraZeneca and 6 (3%) patients with Sinovac/CoronaVac. Only 13 (7%) patients received a booster dose (BD). Injection site pain was main AE for all vaccines (AstraZeneca 50%, Pfizer 33%, Sinopharm 45%, Sinovac 50%). Fever was reported in 14% of patients vaccinated with AstraZeneca, and 2% of those who received Pfizer vaccine. There were isolated cases of lymphadenopathy, fatigue, loss of appetite, joint and muscle pain after Pfizer vaccine and one case of polyneuropathy after a booster dose (Pfizer). No treatment interruptions were attributed to vaccination. Only 23 patients (13%) had confirmed COVID-19 infection (post AstraZeneca 1, Pfizer 13, Sinopharm 8, Sinovac 1). Only 1 case of hospitalization was reported after Sinopharm vaccine. No death was reported due to COVID-19 infection. Majority of patients (80%) were vaccinated following recommendation from their treating oncologist. Conclusions: In our study, COVID-19 vaccination was found to be safe for patients with cancer, and performed well with only one COVID-19 related hospitalization and no deaths. Vaccination rates among cancer patients are marginal in Georgia, and institutional and national policies are needed.

11056 Background: Gender inequalities contribute to burnout and have contributed to an ongoing exodus of women from academic oncology. Our aim was to explore the perceptions and experiences of oncology professionals regarding gender bias in the workplace with the hope of providing critical information to support equity initiatives. Methods: An anonymous, 22-question survey was sent via Survey Monkey to 1512 physicians with oncology-related specialties from National Cancer Institute (NCI) designated cancer centers whose emails were publicly available. Likert-scale questions (never-rarely-sometimes-often-very often) were analyzed with Kruskal-Wallis and Wilcoxon rank sum tests (percentages shown as frequency of having responded “sometimes-often-very often”). Chi-square test was used for categorical variables. Results: A total of 274 physicians completed the survey (response rate 18%): 152 (55.5%) self-identified as female (F); 112 (42%) as male (M); 7 (2.6%) as gender non-conforming or transgender; 3 (1.1%) chose not to answer. Most were White (59.9%), followed by Asian (20.4%), Middle Eastern (5.8 %), Multiracial (5.1%), Hispanic (3.6%), and Black (1.5%). The plurality (n = 103; 37.6%) were < 40 years old. Primary fields of practice included 118 (43.1%) in adult oncology, 45 (16.4%) in combined hematology/oncology, 44 (16.1%) in radiation oncology, 44 (16.1%) in adult hematology, and 23 (8.4%) in other specialties. Female gender was associated with experiencing gender bias more often than male gender in the following areas: clinical practice (80.9% F vs 20.6% M), research activities (73.0% F vs 15.2% M), having difficulty balancing work and non-work responsibilities (95.4% F vs 78.6% M), being held to higher standards compared to physicians of other genders (73.1% F vs 14.2% M), being mistaken as a non-physician (78.9% F vs 6.3% M), and being scrutinized by others while tending to childcare needs (48.8% F vs 23.2% M) (all p .99). Conclusions: Self-identified female academic oncologists at NCI Cancer Centers reported facing gender-related challenges in daily practice at much higher rates than men. There is a clear need to identify root causes and create initiatives to promote gender equity in the field of oncology.

Background: COVID-19 pandemic created major challenges in cancer care. Studies have shown increased risk for COVID-19 infectivity, severe disease and death in patients with cancer. Cancer centers worldwide adapted by modifying and often delaying treatment to minimize contact with patients. Methods: To provide safe and uninterrupted care for patients, a home care program was created for patients with prostate cancer at Acad. F. Todua Medical center. Men with locally advanced or metastatic prostate cancer (MPC) receiving androgen deprivation therapy (ADT) were enrolled. Patients and their caretakers were instructed on gonadotropin-releasing hormone (GnRH) subcutaneous injections (SQ) for home administration. Monthly at home laboratory testing and virtual consultations with medical oncologists every 1-3 months were arranged. Results: A total of 52 patients were enrolled during the period of March 2020 – March 2021. All men were White and had ECOG 0/1. The mean age was 71 [±6.3 y] years. Sixteen (31%) patients had stage IIIB PC and 36 (69%) patients had stage IV disease. Stage IIIB patients were receiving adjuvant ADT with SQ Goserelin Acetate 10,8mg every 8 weeks and bicalutamide 50mg daily for two weeks after definitive local treatment. Thirty-one (86%) patients had hormone sensitive metastatic PC and were receiving SQ Goserelin Acetate 10.8mg (28) every 8 weeks or SQ Leuprolide Acetate 22,5mg every 8 weeks (3) with 2 weeks of Bicalutamide 50mg daily. Five (14%) patients had castration resistant (CR) PC and were receiving SQ Goserelin Acetate 10,8mg every 8 weeks with Enzalutamide 160mg daily. Thirty-three (63%) patients had Gleason’s score of 8/9. All patients were compliant with home injections, laboratory tests and virtual physician visits. Thirty-nine (75%) patients administered injections by themselves. Forty-two (80%) patients had PSA reduction >50%. Ten (20%) patients had disease progression and required clinic visits for investigations. Median time to progression was 12 months. Only 1 (2%) patient acquired COVID-19 infection, was hospitalized and died of respiratory failure. Conclusions: At home ADT with appropriate patient/caregiver education and close follow up may be safe for patients with PC during the COVID-19 pandemic. Legal entity responsible for the study: Acad. F. Todua Medical Center Department of Oncology and Hematology. Funding: Has not received any funding. Disclosure: All authors have declared no conflicts of interest.