Semi-automated validation and quantification of CTLA-4 in 90 different tumor entities using multiple antibodies and artificial intelligence

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@article{cf5701c6f14449b49fc79195bb4d33f6,
title = "Semi-automated validation and quantification of CTLA-4 in 90 different tumor entities using multiple antibodies and artificial intelligence",
abstract = "CTLA-4 is an inhibitory immune checkpoint receptor and a negative regulator of anti-tumor T-cell function. This study is aimed for a comparative analysis of CTLA-4+ cells between different tumor entities. To quantify CTLA-4+ cells, 4582 tumor samples from 90 different tumor entities as well as 608 samples of 76 different normal tissue types were analyzed by immunohistochemistry in a tissue microarray format. Two different antibody clones (MSVA-152R and CAL49) were validated and quantified using a deep learning framework for automated exclusion of unspecific immunostaining. Comparing both CTLA-4 antibodies revealed a clone dependent unspecific staining pattern in adrenal cortical adenoma (63%) for MSVA-152R and in pheochromocytoma (67%) as well as hepatocellular carcinoma (36%) for CAL49. After automated exclusion of non-specific staining reaction (3.6%), a strong correlation was observed for the densities of CTLA-4+ lymphocytes obtained by both antibodies (r = 0.87; p < 0.0001). A high CTLA-4+ cell density was linked to low pT category (p < 0.0001), absent lymph node metastases (p = 0.0354), and PD-L1 expression in tumor cells or inflammatory cells (p < 0.0001 each). A high CTLA-4/CD3-ratio was linked to absent lymph node metastases (p = 0.0295) and to PD-L1 positivity on immune cells (p = 0.0026). Marked differences exist in the number of CTLA-4+ lymphocytes between tumors. Analyzing two independent antibodies by a deep learning framework can facilitate automated quantification of immunohistochemically analyzed target proteins such as CTLA-4.",
author = "David Dum and Henke, {Tjark L C} and Tim Mandelkow and Cheng Yang and Elena Bady and Raedler, {Jonas B} and Ronald Simon and Guido Sauter and Maximilian Lennartz and Franziska B{\"u}scheck and Luebke, {Andreas M} and Anne Menz and Andrea Hinsch and Doris H{\"o}flmayer and S{\"o}ren Weidemann and Christoph Fraune and Katharina M{\"o}ller and Patrick Lebok and Ria Uhlig and Christian Bernreuther and Frank Jacobsen and Clauditz, {Till S} and Waldemar Wilczak and Sarah Minner and Eike Burandt and Stefan Steurer and Blessin, {Niclas C}",
note = "{\textcopyright} 2022. The Author(s).",
year = "2022",
month = jun,
doi = "10.1038/s41374-022-00728-4",
language = "English",
volume = "102",
pages = "650--657",
journal = "LAB INVEST",
issn = "0023-6837",
publisher = "NATURE PUBLISHING GROUP",
number = "6",

}

RIS

TY - JOUR

T1 - Semi-automated validation and quantification of CTLA-4 in 90 different tumor entities using multiple antibodies and artificial intelligence

AU - Dum, David

AU - Henke, Tjark L C

AU - Mandelkow, Tim

AU - Yang, Cheng

AU - Bady, Elena

AU - Raedler, Jonas B

AU - Simon, Ronald

AU - Sauter, Guido

AU - Lennartz, Maximilian

AU - Büscheck, Franziska

AU - Luebke, Andreas M

AU - Menz, Anne

AU - Hinsch, Andrea

AU - Höflmayer, Doris

AU - Weidemann, Sören

AU - Fraune, Christoph

AU - Möller, Katharina

AU - Lebok, Patrick

AU - Uhlig, Ria

AU - Bernreuther, Christian

AU - Jacobsen, Frank

AU - Clauditz, Till S

AU - Wilczak, Waldemar

AU - Minner, Sarah

AU - Burandt, Eike

AU - Steurer, Stefan

AU - Blessin, Niclas C

N1 - © 2022. The Author(s).

PY - 2022/6

Y1 - 2022/6

N2 - CTLA-4 is an inhibitory immune checkpoint receptor and a negative regulator of anti-tumor T-cell function. This study is aimed for a comparative analysis of CTLA-4+ cells between different tumor entities. To quantify CTLA-4+ cells, 4582 tumor samples from 90 different tumor entities as well as 608 samples of 76 different normal tissue types were analyzed by immunohistochemistry in a tissue microarray format. Two different antibody clones (MSVA-152R and CAL49) were validated and quantified using a deep learning framework for automated exclusion of unspecific immunostaining. Comparing both CTLA-4 antibodies revealed a clone dependent unspecific staining pattern in adrenal cortical adenoma (63%) for MSVA-152R and in pheochromocytoma (67%) as well as hepatocellular carcinoma (36%) for CAL49. After automated exclusion of non-specific staining reaction (3.6%), a strong correlation was observed for the densities of CTLA-4+ lymphocytes obtained by both antibodies (r = 0.87; p < 0.0001). A high CTLA-4+ cell density was linked to low pT category (p < 0.0001), absent lymph node metastases (p = 0.0354), and PD-L1 expression in tumor cells or inflammatory cells (p < 0.0001 each). A high CTLA-4/CD3-ratio was linked to absent lymph node metastases (p = 0.0295) and to PD-L1 positivity on immune cells (p = 0.0026). Marked differences exist in the number of CTLA-4+ lymphocytes between tumors. Analyzing two independent antibodies by a deep learning framework can facilitate automated quantification of immunohistochemically analyzed target proteins such as CTLA-4.

AB - CTLA-4 is an inhibitory immune checkpoint receptor and a negative regulator of anti-tumor T-cell function. This study is aimed for a comparative analysis of CTLA-4+ cells between different tumor entities. To quantify CTLA-4+ cells, 4582 tumor samples from 90 different tumor entities as well as 608 samples of 76 different normal tissue types were analyzed by immunohistochemistry in a tissue microarray format. Two different antibody clones (MSVA-152R and CAL49) were validated and quantified using a deep learning framework for automated exclusion of unspecific immunostaining. Comparing both CTLA-4 antibodies revealed a clone dependent unspecific staining pattern in adrenal cortical adenoma (63%) for MSVA-152R and in pheochromocytoma (67%) as well as hepatocellular carcinoma (36%) for CAL49. After automated exclusion of non-specific staining reaction (3.6%), a strong correlation was observed for the densities of CTLA-4+ lymphocytes obtained by both antibodies (r = 0.87; p < 0.0001). A high CTLA-4+ cell density was linked to low pT category (p < 0.0001), absent lymph node metastases (p = 0.0354), and PD-L1 expression in tumor cells or inflammatory cells (p < 0.0001 each). A high CTLA-4/CD3-ratio was linked to absent lymph node metastases (p = 0.0295) and to PD-L1 positivity on immune cells (p = 0.0026). Marked differences exist in the number of CTLA-4+ lymphocytes between tumors. Analyzing two independent antibodies by a deep learning framework can facilitate automated quantification of immunohistochemically analyzed target proteins such as CTLA-4.

U2 - 10.1038/s41374-022-00728-4

DO - 10.1038/s41374-022-00728-4

M3 - SCORING: Journal article

C2 - 35091676

VL - 102

SP - 650

EP - 657

JO - LAB INVEST

JF - LAB INVEST

SN - 0023-6837

IS - 6

ER -