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88 Background: From 1995-2016, rates of colorectal cancer (CRC) have increased among young adults (YA) under 50 years by 2% annually, despite overall rates of CRC among adults over age 65 decreasing. Unfortunately, this population is disproportionately affected by diagnosis at later stage of disease due to systematic and healthcare factors. Such late diagnoses are associated with higher symptom burden among survivors; however, symptom burden among YA early-onset CRC (EOCRC) survivors is poorly understood. The present study aims to characterize symptom burden among YA EOCRC survivors. Methods: A cross sectional survey was administered online in collaboration with a national organization for YA CRC survivors. Respondents (18-49 years) were EOCRC survivors who were 6-36 months from diagnosis/relapse. Survivors endorsed symptoms they experienced among 23 common CRC late effects. Responses were stratified by symptom duration (6-18 versus 19-36 months) to examine differences in endorsement rates among respondents. Results: Respondents (n=235) were colon (n=86) and rectal (n=149) cancer survivors, primarily male 63%, diagnosed at 32.4 years (SD=6.65), with an average of 5.1 (SD=2.57) symptoms. Overall, the most highly reported symptoms were fatigue, perceived change in appearance after treatment, and nail color changes. Comparisons of 6-18 and 19-36 months-from-diagnosis groups revealed similar symptom endorsement rates, with those 19-36 months from diagnosis endorsing constipation/diarrhea, anal bleeding, and incisional discomfort at higher rates than those 6-18 months from diagnosis. The 6-18 and 19-36 months-from-diagnosis groups carried similar symptom burdens of 4.9 (SD=2.57) and 5.1 (SD=2.58), respectively. Conclusions: YA EOCRC survivors endorse numerous symptoms that may interfere with their daily living and quality of life. Similarities in endorsement between 6-18 month and 19-36-month groups suggest symptoms may become chronic and persist beyond cancer treatment. Fortunately, many symptoms can be mitigated or prevented with proper medical and/or psychosocial intervention, patient education, and resource availability. Providers can leverage these findings in their evaluation of YA EOCRC patients during treatment and follow-up care to ensure the delivery of optimal symptom management. [Table: see text]

Simple Summary Young adult survivors of colorectal cancer often undergo intensive and multimodal cancer therapy and may experience impairments in health-related quality of life. However, knowledge regarding the impacts of colorectal cancer on the quality of life of young adults is limited. This study aimed to characterize overall health-related quality of life among young adult colorectal cancer survivors within 36 months of their diagnosis or relapse, to compare those who are shorter versus longer time from initial diagnosis or relapse, and to examine correlates across the distinct domains of quality of life. Such information can inform the development of life stage-appropriate counseling and interventions to maintain and improve health-related quality of life following a colorectal cancer diagnosis for this at-risk patient population. Abstract The incidence of colorectal cancer (CRC) is rising among young adults. Health-related quality of life (HRQoL) in survivorship is not well-described in this population. We assessed HRQoL among young adult CRC survivors diagnosed from age 18–39 (AYAs) to examine differences by time from diagnosis, and to identify key correlates. A cross-sectional online survey was administered in collaboration with a national patient advocacy organization. The Functional Assessment of Cancer Therapy (FACT-C) was used to measure HRQoL, which assesses HRQoL globally and across 4 domains: emotional, physical, social, and functional. T-tests were conducted to compare HRQoL between survivors who were 6–18 months versus 19–36 months from diagnosis or relapse and multiple linear regression was conducted to identify correlates. The sample (n = 196) had a mean age of 32.2(SD ± 4.5); 116 (59.9%) were male; and the self-reported tumor location was colon (39.3%) or rectal (60.7%). The majority (56.4%) were diagnosed with stage 2 disease; 96.9% were non-metastatic. The mean global HRQoL score was 67.7 out of a possible score of 136. Across domains, mean scores were low. Emotional and physical well-being were significantly higher among survivors who were 19–36 months from diagnosis/relapse compared to those 6–18 months from diagnosis/relapse. Longer time from diagnosis and older current age were associated with higher HRQoL, while more intensive treatment and higher clinical disease stage were negatively associated, particularly in the emotional and physical domains. Overall, HRQoL was low in this population, and further research is needed to inform age-appropriate interventions to improve HRQoL for AYA CRC survivors.

34 Background: Incidence of colorectal cancer (CRC) in patients under 50 years of age is rising. Quality of life in survivorship is not well-described in this population. We compared health-related quality of life (HRQoL) in CRC survivors ≤ 50 years old who were 6-18 months or 19-36 months from initial diagnosis or relapse. Methods: A cross-sectional online survey was administered in collaboration with a national organization for young CRC survivors. The Functional Assessment of Cancer Therapy (FACT-C) was used to measure HRQoL, which assesses HRQoL globally, including a CRC specific scale, and emotional, physical, social, and functional well-being domains. T-tests were conducted to compare HRQoL between survivors who were 6-18 months versus 19-36 months from diagnosis/relapse. Results: This sample (n=308) had a mean age of 33.76 SD±6.68; 201 (65.3%) were male; tumor location was colon or rectal in 41.7% and 58.3%, respectively. The majority (55.23%) were diagnosed with stage 2 disease; 98.0% were non-metastatic. 42.2% experienced relapse; 25% had an ostomy. Most survivors were 6-18 months (N=189; 61.4%) from diagnosis/relapse, and key demographics and disease characteristics did not significantly differ between those who were shorter versus longer time from diagnosis/relapse. The mean global HRQoL score was 67.3 out of a possible score of 136. Across domains, scores were low, with social well-being the highest (15.15/28) and emotional well-being the lowest (11.44/24). Social well-being was significantly higher among survivors who were 6-18 months from diagnosis/relapse compared to those 19-36 months (15.98 for 6-18 months vs. 13.83 for 19-36; p