Quantitative assessment of immune cell populations and associations with clinical outcomes in African-American (AA) versus Caucasian triple-negative breast cancer (TNBC).

2019 ◽  
Vol 37 (15_suppl) ◽  
pp. e14180-e14180
Author(s):  
Tess O'Meara ◽  
Vesal Yaghoobi ◽  
Kim Blenman ◽  
Vasiliki Pelekanou ◽  
Andrea Silber ◽  
...  

e14180 Background: Tumor infiltrating lymphocytes (TILs) are powerful prognostic and predictive factors in TNBC. We hypothesized that survival differences in TNBC by race may be caused by differences in the tumor immune microenvironment. We assessed racial differences in the extent and composition of immune infiltration in TNBC and correlated these differences with clinical characteristics and disease-free survival (DFS). Methods: Formalin fixed paraffin embedded TNBC samples and clinical information were collected for n = 43 AA and n = 43 Caucasian cases, matched by diagnosis date and stage. Stromal TILs were assessed on H&E-stained slides. Multiplexed immunofluorescence was performed to quantify CD68 (macrophage), CD8 (cytotoxic T cell) and PD-L1 protein expression in the whole-section, tumor and stromal compartments. Average expression for each marker was calculated over all fields of view. Cox proportional hazards were used to assess associations between DFS, staining markers and clinical variables. Results: Characteristics of AA and Caucasian cases were not significantly different. There were 14 and 8 recurrences in the AA and Caucasian cohorts, respectively (median follow-up 8.7 vs 9.4 yrs). TIL counts (p = 0.031) and overall CD68 expression (p = 0.005) were higher in AA compared to Caucasian patients. 21% percent of AA cases had TIL predominant phenotype versus 3% of Caucasians, but CD8 expression was similar by race. PD-L1 expression was higher in stroma compared to tumor across all patients (median 401 vs 267 au, p = 0.002) and did not differ by race. Higher overall and stromal PD-L1 expression were associated with better DFS in the entire population (median 3501 vs 1895 days, p = 0.0009) and in each race separately. Higher CD68 expression was also associated with better DFS (median 3015 vs 2111 days, p = 0.0004). In multivariate analysis of DFS, stage at presentation remained significant (p = 0.002) in addition to PD-L1 and CD68 expression. Conclusions: AA TNBC had higher TIL counts and CD68 expression but similar CD8 and PD-L1 expression compared to Caucasians. High CD68 and PD-L1 expression were associated with better DFS in both race cohorts.

2021 ◽  
Vol 28 (10) ◽  
pp. 683-693
Author(s):  
Vivian Rosery ◽  
Henning Reis ◽  
Konstantinos Savvatakis ◽  
Bernd Kowall ◽  
Martin Stuschke ◽  
...  

The tumor immune microenvironment (TME) represents a key determinant for responses to cancer treatment. However, the immune phenotype of highly proliferative gastroenteropancreatic neuroendocrine neoplasms (GEP-NEN) is still largely elusive. In this retrospective study, we characterized the TME of high-grade (G3, Ki-67 > 20%) GEP-NEN. We analyzed formalin-fixed paraffin-embedded samples from 37 patients with GEP-NEN G3 by immunohistochemistry and multiplex immunofluorescence to address the abundance and spatial interaction of relevant immune subsets. We focused on the expression of immune checkpoint molecules PD-1 and PD-L1, the cytotoxic T-cell marker CD8, and the tumor-associated macrophage marker CD206. Findings were correlated with overall survival (OS) from the date of a cancer diagnosis. Patients with PD-L1-positive tumors (CPS ≥ 1) and intense PD-1+CD8+ immune cell infiltration showed the most favorable median OS. Multiplex immunofluorescence staining of ten representative tissue samples illustrated intratumoral heterogeneity of PD-L1 expression. Dense PD-1+CD8+ immune cell infiltrates were observed in PD-L1-positive tumor regions but not in PD-L1-negative regions. Proximity analysis revealed a spatial interaction between PD-1+CD8+ cells and PD-L1-positive cells. Our data suggest a pre-existing antitumor immune response in the TME in a subgroup of GEP-NEN G3. This supports a targeted clinical exploration of immunotherapeutic approaches.


2017 ◽  
Vol 35 (15_suppl) ◽  
pp. e16571-e16571
Author(s):  
Kevin Wong ◽  
Michael Shusterman ◽  
Benjamin Adam Gartrell

e16571 Background: Black patientswithrenal cell carcinoma (RCC) have a unique distribution of histological subtypes and historic worse survival compared to white patients. Little is known about RCC in Hispanics. We investigated histologic and survival differences between racial groups treated for RCC at the Montefiore-Einstein Cancer Center (MECC) in Bronx, NY. Methods: We included via the Cancer Registry 1010 patients who underwent RCC resection at MECC between 2000 and 2015. Demographics, clinical characteristics and pathology reports were collected. Logistic regression and Cox proportional hazards models were built to evaluate the association of histology and survival with clinically and statistically significant risk factors in Non-Hispanic White (NHW), Non-Hispanic Black (NHB), and Hispanic (H) patients. Results: 233 patients were NHW (23.1%), 383 NHB (37.9%), 174 H (17.2%), and 220 other race (21.8%). Median age was 61 (range 22, 91). 58% were male. Histology was 529 (52%) clear cell (CC), 255 (25%) papillary (P), 100 (10%) chromophobe, and 126 (12.5%) other. P was more common in NHB (60.5%) compared to NHW (17%) and less common in H (6.3%) patients (P < 0.0001). On multivariate logistic analysis, patients with P vs. CC were more likely to be NHB (OR 5.06; 95% CI 2.92, 8.76; P < 0.0001) and less likely to have a body mass index > 30 (BMI, OR 0.49; 95% CI 0.32, 0.76, P = 0.001) adjusting for age, race, gender, hypertension (HTN), and end stage renal disease (ESRD). Adjusting for above covariates there were no significant differences for C vs. CC. There was no difference in disease free survival (DFS) for NHB vs. NHW (HR 0.93; 95% CI 0.44, 1.94; P = 0.841) or H vs. NHW (HR 1.29; 95% CI 0.62, 2.71; P = 0.495) patients adjusting for age, gender, histology, ESRD, and BMI. There was no difference in overall survival (OS) for NHB vs. NHW (HR 0.97; 95% CI 0.57, 1.65; P = 0.908) or H vs. NHW (HR 1.37; 95% CI 0.79, 2.38; P = 0.256) patients adjusting for the same covariates. Conclusions: In this cohort of patients with RCC, P histology and lower BMI were significantly associated with NHB race. Unlike historic cohorts there was no significant difference in DFS or OS in NHB compared to NHW patients.


2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Sergiu Susman ◽  
Radu Pîrlog ◽  
Daniel Leucuța ◽  
Andrei Otto Mitre ◽  
Vlad Adrian Padurean ◽  
...  

Abstract Background In spite of the multimodal treatment used today, glioblastoma is still the most aggressive and lethal cerebral tumour. To increase survival in these patients, novel therapeutic targets must be discovered. Signal transducer and activator of transcription 3 (Stat3), a transcription factor that controls normal cell differentiation and survival is also involved in neoplastic celltransformation. In this study we evaluated the immunohistochemical expression of pY705-Stat3 in patients with primary glioblastoma and determined its prognostic role by correlating it with survival. Methods This retrospective study included 94 patients diagnosed with glioblastoma. We determined the localization, number of positive cells, and marker intensity for pY705-Stat3 in these patients with the use of immunohistochemistry. The prognostic role was determined by correlating pY705-Stat3 expression on formalin-fixed paraffin-embedded tumour tissues with the patient’s survival in univariate and multivariate COX regressions. Results We found a statistically significant difference in survival between the patients with more than 20% pY705-Stat3 positive cells and those with less than 20% pY705-Stat3 positive cells (8.9 months median survival versus 13.7 months medial survival, p <  0.001). On multivariate analyses with the COX proportional hazards regression model including pY705-Stat3 expression, age and relapse status, pY705-Stat3 status was an independent prognostic factor in glioblastoma (P <  0.001). Conclusion The results obtained show that the immunohistochemical expression of pY705-Stat3 correlates with survival in glioblastoma. This study identifies Stat3 as a possible target for existing or new developed Stat3 inhibitors.


2020 ◽  
Vol 38 (15_suppl) ◽  
pp. 583-583
Author(s):  
Nour Abuhadra ◽  
Ryan Sun ◽  
Jennifer Keating Litton ◽  
Gaiane M Rauch ◽  
Alastair Mark Thompson ◽  
...  

583 Background: Pathologic complete response is an excellent surrogate for disease-free survival (DFS) and overall survival (OS) in TNBC. High sTIL is associated with improved pCR rates in TNBC. Recent data suggest that high sTIL is also associated with improved outcomes in patients who received no chemotherapy for early stage TNBC (Park, Annals of Oncology, 2019). Thus, we hypothesized that high sTIL may have prognostic impact in patients who do not achieve pCR to NAT. Methods: Pretreatment core biopsies from 182 patients with early-stage TNBC enrolled on the ARTEMIS trial (NCT02276443) were evaluated for sTIL by H&E. Patients were stratified according to sTIL (low < 30%, and high > 30%) and pCR (patients with pCR vs. no pCR). The primary outcome measure was DFS, defined from the date of diagnosis to the first local recurrence, distant metastases or death. Cox proportional hazards regression model was used. During follow-up 33 events for DFS were observed. Results: Among subjects who achieve pCR, DFS was excellent regardless of sTIL status and significantly better than those without pCR (p < 0.05). However, patients with high sTIL and no pCR demonstrated significantly worse DFS compared to all subjects having pCR (HR 0.18, 95% CI 0.04-0.76, p = 0.02). Additionally, we did not find a significant difference between high and low sTIL patients who did not achieve pCR. Conclusions: In early TNBC receiving NAT, for patients failing to achieve pCR, high sTIL was not associated with improved DFS; outcomes were comparable to those with low sTIL without pCR. Thus, high sTIL at baseline does not appear to confer an intrinsic prognostic benefit in the absence of pCR.


Circulation ◽  
2013 ◽  
Vol 127 (suppl_12) ◽  
Author(s):  
Stephen P Glasser ◽  
Yulia Khodneva ◽  
Daniel Lackland ◽  
Ronald Prineas ◽  
Monika Safford

Objective: The independent prognostic value of prehypertension (preHTN) for incident coronary heart disease (CHD) remains unsettled. Using the REasons for Geographic And Racial Differences in Stroke (REGARDS) cohort study, we examined associations between preHTN and incident acute CHD and CVD death. Methods: REGARDS includes 30,239 black and white community-dwelling adults age 45 and older at baseline. Recruitment occurred from 2003-7, with baseline interviews and in-home data collection for physiologic measures. Follow-up is conducted by telephone every 6 months to detect events and deaths, which are adjudicated by experts. Systolic BP was categorized into <120 mmHg (n=4385), 120-129 mmHg (n=4000), 130-139 (n=2066), and hypertension was categorized into controlled (<140/90 mmHg on treatment) (n=8378), and uncontrolled (>140/90 mmHg) (n=5364). Incident acute CHD was defined as definite or probable myocardial infarction (MI) or acute CHD death. CVD death was defined as acute CHD, stroke, heart failure or other cardiovascular disease related. Cox proportional hazards models estimated the hazard ratios (HR) for incident CHD by BP categories, adjusting for sociodemographics and CHD risk factors. Results: The 23,393 participants free of CHD at baseline were followed for a median of 4.4 years. Mean age was 64.1, 58% were women and 42% were black. There was a significant interaction between sex and BP categories, therefore analyses were stratified by sex. There were 252 non-fatal and fatal acute CHD events among women and 407 among men. Among women, compared with SBP<120 mmHg, BP categories above SBP 120 mmHg were associated with incident CHD (adjusted HR for SBP120-129 mmHg=1.94 {95% CI 1.04-3.62]; SBP 130-139 mmHg=1.92 {0.95-3.87}; controlled HTN=2.16 {1.25-3.75}; uncontrolled HTN=3.25 {1.87-5.65}) in fully adjusted models. Among men, only uncontrolled HTN was associated with incident CHD (HR=1.55 {1.11-2.17}). Conclusion: In this sample, preHTN may be associated with incident CHD among women but not men.


Stroke ◽  
2012 ◽  
Vol 43 (suppl_1) ◽  
Author(s):  
Elsayed Z Soliman ◽  
George Howard ◽  
George Howard ◽  
Mary Cushman ◽  
Brett Kissela ◽  
...  

Background: Prolongation of heart rate-corrected QT interval (QTc) is a well established predictor of cardiovascular morbidity and mortality. Little is known, however, about the relationship between this simple electrocardiographic (ECG) marker and risk of stroke. Methods: A total of 27,411 participants aged > 45 years without prior stroke from the REasons for Geographic and Racial Differences in Stroke (REGARDS) study were included in this analysis. QTc was calculated using Framingham formula (QTcFram). Stroke cases were identified and adjudicated during an up to 7 years of follow-up (median 2.7 years). Cox proportional hazards analysis was used to estimate the hazard ratios for incident stroke associated with prolonged QTcFram interval (vs. normal) and per 1 standard deviation (SD) increase, separately, in a series of incremental models. Results: The risk of incident stroke in the study participants with baseline prolonged QTcFram was almost 3 times the risk in those with normal QTcFram [HR (95% CI): 2.88 (2.12, 3.92), p<0.0001]. After adjustment for age, race, sex, antihypertensive medication use, systolic blood pressure, current smoking, diabetes, left ventricular hypertrophy, atrial fibrillation, prior cardiovascular disease, QRS duration, warfarin use, and QT-prolonging drugs (full model), the risk of stroke remained significantly high [HR (95% CI): 1.67 (1.16, 2.41), p=0.0060)], and was consistent across several subgroups of REGARDS participants. When the risk of stroke was estimated per 1 SD increase in QTcFram, a 24% increased risk was observed [HR (95% CI): 1.24 (1.16, 1.33), p<0.0001)]. This risk remained significant in the fully adjusted model [HR (95% CI): 1.12 (1.03, 1.21), p=0.0055]. Similar results were obtained when other QTc correction formulas including Hodge’s, Bazett’s and Fridericia’s were used. Conclusions: QTc prolongation is associated with a significantly increased risk of incident stroke independently from known stroke risk factors. In light of our results, examining the risk of stroke associated with QT-prolonging drugs may be warranted.


Circulation ◽  
2012 ◽  
Vol 125 (suppl_10) ◽  
Author(s):  
Todd M Brown ◽  
Joshua Richman ◽  
Vera Bittner ◽  
Cora E Lewis ◽  
Jenifer Voeks ◽  
...  

Background: Some individuals classified as having metabolic syndrome (MetSyn) are centrally obese while others are not with unclear implications for cardiovascular (CV) risk. Methods: REGARDS is following 30,239 individuals ≥45 years of age living in 48 states recruited from 2003-7. MetSyn risk factors were defined using the AHA/NHLBI/IDF harmonized criteria with central obesity being defined as ≥88 cm in women and ≥102 cm in men. Participants with and without central obesity were stratified by whether they met >2 or ≤2 of the other 4 MetSyn criteria, resulting in the creation of 4 groups. To ascertain CV events, participants are telephoned every 6 months with expert adjudication of potential events following national consensus recommendations and based on medical records, death certificates, and interviews with next-of-kin or proxies. Acute coronary heart disease (CHD) was defined as definite or probable myocardial infarction or acute CHD death. To determine the association between these 4 groups and incident acute CHD, we constructed Cox proportional hazards models in those free of CHD at baseline by race/gender group, adjusting for sociodemographic variables. Results: A total of 20,018 individuals with complete data on MetSyn components were free of baseline CHD. Mean age was 64+/−9 years, 58% were women, and 42% were African American. Over a mean follow-up of 3.4 (maximum 5.9) years, there were 442 acute CHD events. In the non-centrally obese with>2 other risk factors, risk for CHD was higher for all but AA men, though significant only for white men. In contrast, in the centrally obese with >2 other risk factors, risk was doubled for women, but only non-significantly and modestly increased for men. Only AA women with central obesity and ≤2 other risk factors had increased CHD risk (Table). Conclusion: The CHD risk associated with the MetSyn varies by the presence of central obesity as well as the race and gender of the individual.


Circulation ◽  
2013 ◽  
Vol 127 (suppl_12) ◽  
Author(s):  
Stephen P Glasser ◽  
Daniel L Halberg ◽  
Charles Sands ◽  
Paul Muntner ◽  
Monika Safford

Background: Increased attention has been given to pulse pressure (PP) as a potential independent risk factor of cardiovascular disease. We examined the relationship between PP and incident acute coronary heart disease (CHD). Methods: We used data from the REasons for Geographic And Racial Differences in Stroke (REGARDS) national cohort study of 30,239 black and white participants aged 45 years or older and enrolled between 2003 and 2007. Baseline data included a 45-minute interview and in-home visit during which blood pressure was assessed and recorded as the average of two measurements obtained after a 5 minute seated rest. PP (SBP-DBP) was classified into 4 groups (<45, 45-54, 54.1-64, >64.1 mmHg). Telephone follow-up occurred every six months for self or proxy-reported suspected events, triggering medical record retrieval and adjudication by experts. Cox-proportional hazards models examined the association of incident CHD with PP groups, adjusting for socio-demographic and clinical risk factors. Results: This analysis included 22,909 participants free of CHD at baseline, with mean age 64.7±9.4 years; 40.4%were black, 44.6% were male and they experienced a total of 515 incident CHD events over a mean 3.4 yrs of follow-up (maximum 6 years). In unadjusted analyses, compared with PP<45 mmHg, each higher PP group had incrementally higher hazard ratios (HR) for incident CHD (HR 1.28 {95% CI 1.02-1.60}, 2.05 {1.63-2.56}, 3.82 {3.08-4.74}, p<0.001 for linear trend). This relationship persisted after fully adjusting including SBP for the highest PP group (HR 0.96 {0.75-1.21}, 1.12 {0.86-1.46}, 1.51 {1.09-2.10}, p trend <0.0001). Conclusions: High PP was associated with incident CHD, even when accounting for SBP and numerous other CVD risk factors.


2020 ◽  
Author(s):  
Mahmoud Al-Masri ◽  
Tawfiq Al-Shobaki ◽  
Hani Al-Najjar ◽  
Rafal Iskanderian ◽  
Enas Younis ◽  
...  

Abstract Introduction BRAF V600E is one of the most common mutations in Papillary Thyroid Cancer (PTC). Its clinical correlation has been extensively studied with contradictory results. The aim of this study is to evaluate the oncological impact of BRAF V600E mutation on a cohort of Middle Eastern PTC patients treated at a single institute.Methods Patients with histologically confirmed PTC that were treated surgically between 2006 to 2015 were included in the study. Formalin fixed paraffin embedded tumor blocks were sectioned and tested for BRAF V600E mutation. Short- and long-term oncological outcomes were collected. Results 128 patients (68% females) were included with a mean age of 38 years (±13.8). Median follow-up was 50 months. BRAF V600E mutation was found in 71% of patientsIThe BRAF negative tumors were significantly larger than the BRAF positive (3.47 cm versus 2.31 cm respectively, P = 0.009). All other clinicopathological characteristics were comparable between BRAF V600E mutation positive and negative groups. The two groups showed similar 5-year Disease-free (P= 0.37) and Overall survival rates (P = 0.94).Conclusion BRAF V600E mutation did not affect loco-reginal recurrence, distant metastasis, overall and disease-free survival. These results support the diversity of BRAF V600E significance among various ethnicities.


Circulation ◽  
2021 ◽  
Vol 143 (Suppl_1) ◽  
Author(s):  
Gargya Malla ◽  
Andrea Cherrington ◽  
Monika M Safford ◽  
Parag Goyal ◽  
Doyle M Cummings ◽  
...  

Background: Heart failure (HF) mortality rates have been increasing since 2011. Individual-level education and occupation have been inversely associated with HF mortality among those with diabetes mellitus (DM) but not among those without DM. However, less is known about the association between neighborhood social and economic environment (NSEE) and HF risk and whether this association varies by DM status. Methods: This study included 21,244 Black and White adults age >=45 years at baseline (2003-07) from the REGARDS Study. NSEE quartiles were created using z-scores based on 6 census tract variables from year 2000 (% <high school education, % unemployed, % household with <$30,000, % living in poverty, % on public assistance, % without car). Incident HF events (fatal or non-fatal) were adjudicated based on hospitalization with HF signs and symptoms, supportive imaging or biomarkers. Diabetes was defined as fasting glucose >=126 mg/dL or random glucose >=200 mg/dL or use of diabetes medications. Cox proportional hazards regression was used to obtain hazard ratios (95% CI) with HF follow-up through 2016. Results: Mean age was 65 years, 54% were women, 61% were White and 18% had prevalent DM at baseline. During a median 10.1 years, 829 incident HF events occurred. Among adults with DM, neighborhood disadvantage was associated with an increased HF risk , but this association was not statistically significant (Table). Among adults without DM, the risk of HF was higher for participants living in any neighborhood that was not the most advantaged, and the magnitude of association was smiliar across NSEE quartiles. Conclusion: Adults living in disadvantaged neighborhoods had a higher risk of HF, particularly among those without DM. Addressing neighborhood social and economic conditions may be important for HF prevention.


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