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Immunohistochemical Stains

 

IHC Antibody List

NameSynonymsAntibody Description/ Clinical Use
A-ACTAlpha-1 antichymotrypsin, A-ACT, ACT, A1ATα1-Antichymotrypsin; histiocytes; pancreatic pseudopapillary tumor
A-ATAlpha-1-antitrypsin, A-ATα1-Antitrypsin; inherited A-AT deficiency
ACTHAdrenocorticotropic hormoneAntiadrenocorticotropic hormone; anterior pituitary
Actin−Muscle-specificMuscle-specific actin, MSA, HHF-35Skeletal, smooth, and cardiac muscle; myofibroblastic differentiation
Actin−Smooth Muscle (SMA)Smooth muscle actinMyofibroblasts; myoepithelial cells
AE1Cytokeratin AE1Cytokeratin AE1; epithelial marker
AE1/AE3Cytokeratin AE1/AE3Screening cytokeratin cocktail; epithelial marker
AE3Cytokeratin AE3Cytokeratin AE3; high molecular weight cytokeratin; epithelial marker
AFPAlpha fetoproteinα-Fetoprotein (AFP); hepatocellular carcinoma; hepatoid carcinoma; yolk sac tumor
AKT PhosphateRUO AKT 1; protein kinase B, PKB, Rac-alphaAKT (protein kinase B)
ALK-1Anaplastic lymphoma kinase-1Anaplastic lymphoma kinase-1; anaplastic large-cell lymphoma; inflammatory myofibroblastic tumor; adenocarcinoma of lung subset
Amyloid A Amyloid A protein
Androgen ReceptorARProstate carcinoma; associated with prognosis and treatment outcome
Annexin A1Annexin A, Annexin 1, ANXA1Hairy cell leukemia; myeloid cells
B72.3TAG72, Breast-3,BRST-3Simple epithelium; adenocarcinoma; excludes mesothelioma
BCA-225Breast carcinoma-associated glycoproteinBreast carcinoma-associated glycoprotein; breast carcinoma and other adenocarcinomas
BCL-1 (Cyclin D1)Cyclin D1; PRAD-1Mantle-cell lymphoma; multiple myeloma subset
BCL-1/CD20 Double stain; useful for the diagnosis of mantle cell lymphoma
BCL-2 Follicular lymphoma; other B-cell and T-cell lymphomas; soft tissue tumor
BCL-2/BCL-6 Double stain; useful for the diagnosis of follicular center cell lymphoma, diffuse large-cell type
BCL-6 Follicular center B-cells; follicular lymphoma; DLBCL subset
Ber-EP4BER-EP4, BerEP4, BEREP4, Ep-Cam, epithelial antigen, CD326, Ep-CAMEpithelial antigen; carcinoma; differentiates carcinoma from mesothelioma
β-AmyloidAmyloid beta-protein (A-beta-P); amyloid beta-peptide; A-beta; beta-A4 protein; beta-proteinAlzheimer's disease; senile plaques; neurofibrillary tangles; cerebrovascular deposits
β-Cateninbeta-cateninSoft tissue lesion; fibromatosis; synovial sarcoma
BG8 (LewisY)Blood group-related antigen; Lewis YAdenocarcinoma; exclude mesothelioma
BOB-1BOB.1/OBF.1B-cells
CA 19.9CA-19.9Pancreas, GI, ovary, lung, and transitional cell carcinoma
CA 125 (OC125)OC125, ovarian cancer antigenFemale genital tract; breast carcinoma; other adenocarcinoma, including lung and pancreatobiliary
CAIXCarbonic anhydrase IX, CA9Carbonic anhydrase IX; renal cell carcinoma (RCC); distinguish clear cell renal cell carcinoma from other RCC subset
Calcitonin Thyroid C-cells; medullary carcinoma
CaldesmonCALD, h-CaldesmonSmooth muscle and myoepithelial cells
CalponinCALPMyoepithelial, myofibroblastic, and smooth muscle cells
CalretininCALRETMesothelial cells; sex cord stromal tumor; adrenal cortical tumor
CAM 5.2CK8/18Low molecular weight cytokeratin 8 and 18; epithelial tumor
CAM 5.2/AE1 Screening cytokeratin cocktail; epithelial tumor
CD1a Cortical thymocytes; Langerhans cell histiocytosis (LCH); T-ALL subset
CD2E-rosette receptor; LFA-2Pan, thymic, and peripheral T-cells; NK cells; neoplastic mast cells
CD3 (M)CD3 (mono)CD3 (monoclonal); pan T-cells
CD3 (P)CD3 (poly)CD3 (polyclonal); pan T-cells
CD3/CD20 Double stain; useful to distinguish B-cells (CD20+) and T-cells (CD3+)
CD4 Helper/inducer T-cells; thymocyte and monocyte subsets
CD5 Pan T-cells; B-cell lymphoma subset (B-CLL/SLL and MCL); thymic carcinoma
CD7 Pan T‐cells; NK cells, thymocytes; rare AML
CD8 Suppressor/cytotoxic T‐cells; thymocyte and T‐cell/NK cell subsets; T‐LGL leukemia
CD10CALLACALLA; B-cell and T-cell lymphoma subsets; endometrial stromal cells; renal cell carcinoma subset
CD14 Mature monocytes; some granulocytes; macrophages
CD15LeuM1Epithelial, myeloid, and Reed-Sternberg cells; Hodgkin lymphoma
CD20L26Pan B-cells
CD21 Follicular dendritic cells; B-cell subset
CD22 Pan B-cells
CD23BU38, SP23Follicular dendritic cells; B-cell subset; B-CLL
CD25 Activated T‐ and B‐cells; HCL; ATLL
CD30Ki-1, BerH2Reed‐Sternberg cells; anaplastic large‐cell lymphoma; DLBCL subset; Hodgkin lymphoma; embryonal carcinoma
CD31PECAM, platelet-endothelial cell adhesion molecule-1Endothelium; vascular neoplasm; plasma cells
CD33 Monocytes; myeloid cells; AML; ALL subset
CD34Clones: QBEnd/10 and HPCABlasts; stem cells; endothelium; GIST; soft tissue tumor subset
CD35Follicular dendritic cell marker; CR1Follicular dendritic cells
CD43MT1 (T-cell)T-cells; B-cell lymphoma subset (B-CLL/SLL, MCL, Burkitt); plasma and myeloid cells; histiocytes
CD45 (LCA)LCA, leukocyte-common antigenLeukocyte common antigen
CD45RACD45RA (B-cell marker)B-cells
CD45ROCD45RO (T-cell marker), UCHL-1Activated/memory T-cells; B-cell subset
CD56N-CAM, LEU-6Neural and neuroendocrine tumor; soft tissue tumor subset; NK cells; plasma and T-cell subsets; LGL leukemia
CD57HNK‐1, LEU‐7Neural and neuroendocrine tumor; thymoma; NK cells; T-LGL leukemia; T-cell subset
CD61GPIIIAMegakaryocytes; platelets
CD68KP-1Histiocytes; macrophages
CD71 Erythroid precursors and large-cell lymphoma; transferrin receptor; activated T- and B-cells; macrophages
CD74 B-cells
CD79a Pan B-cells
CD99MIC2, O13PNET/Ewing sarcoma; soft tissue tumor subset; sex cord stromal tumor
CD117 (c-KIT)CD117, c-KITGIST; subset of carcinoma including adenoid cystic carcinoma; germ cell neoplasm; hematolymphoid neoplasm
CD123 Dendritic cell precursors; type 2 (DC2) cells; blastic plasmacytoid dendritic cell neoplasm (BPDCN)
CD138Syndecan-1Plasma cells; subset of epithelial cells
CD163M130, Ber-Mac3, Ki-M8, SM4Monocytes; macrophages; dendritic interstitial cells
CDX-2 Enteric differentiation; GI tumor; colorectal carcinoma; carcinoid tumor subset
CDX-2/CK-7 Double stain; useful to distinguish stomach and colon carcinoma from breast, lung, and ovarian carcinoma
CEA (M)Carcinoembryonic antigen (mono)Carcinoembryonic antigen (monoclonal); adenocarcinoma
CEA (P)Carcinoembryonic antigen (poly)Carcinoembryonic antigen (polyclonal); epithelial marker; adenocarcinoma subset; negative in mesothelioma
Chromogranin ACHROMNeuroendocrine neoplasm; paraganglioma
Chymotrypsin Exocrine pancreas; acinar cell tumor
CK-5Cytokeratin 5Tumor with squamous differentiation; squamous cell vs adenocarcinoma of lung classification; myoepithelial cells; benign vs malignant breast intraductal proliferation
CK-5/6Cytokeratin 5/6Tumor with squamous differentiation; squamous cell vs adenocarcinoma of lung classification; myoepithelial cells; benign vs malignant breast intraductal proliferation
CK-7Cytokeratin 7Various subtypes of carcinoma; frequently used in conjunction with CK-20 for tumor profiling
CK-7/TTF-1 Double stain; useful for the diagnosis of lung adenocarcinoma
CK-14Cytokeratin 14High molecular weight cytokeratin; tumor with squamous differentiation; myoepithelial cells; breast carcinoma with basal-like phenotype
CK-17Cytokeratin 17High molecular weight cytokeratin; tumor with squamous differentiation; pancreatobiliary adenocarcinoma; breast carcinoma with basal-like phenotype
CK-18Cytokeratin 18Low molecular weight cytokeratin
CK-19Cytokeratin 19Epithelial tumor; papillary carcinoma of the thyroid vs benign thyroid lesion
CK-20Cytokeratin 20Subset of carcinoma; reacts primarily with gastric and intestinal epithelium, urothelium, and Merkel cells
CK-HMW (34βE12)Cytokeratin−high molecular weight, keratin 903, CK903, CK34bE12, 34betaE12CK-903; broad-spectrum high molecular weight cytokeratin; squamous cell and subsets of adenocarcinoma and transitional cell carcinoma; prostate basal cells; prostate carcinoma vs adenosis/PIN
CK-LMW (35βH11)Cytokeratin−low molecular weight, CK35bH11, CK8, 35betaH11CK-8; epithelial neoplasm with simple epithelium
CMV−IHCCytomegalovirus by IHCCytomegalovirus
COLL-IVCollagen IVCollagen type IV; basement membrane material; soft tissue tumor subset
COX-2Cyclooxygenase-2Cyclooxygenase-2; prognostic and predictive marker in a variety of tumors
D2-40PodoplaninEvaluation of lymphatic endothelial differentiation for lymphatic invasion; subset of angiosarcoma; vascular tumor of lymphatic origin; mesothelioma
DBA44 (HCL)DBA.44, HCLHairy cell leukemia
DesminDESStriated and smooth muscle; leiomyosarcoma; rhabdomyosarcoma; desmoplastic small round cell tumor
DOG1 GIST, in particular CD117-negative lesion
EBER−ISHEBV by ISH; Epstein-Barr virusEpstein-Barr early RNA; Epstein-Barr virus identification
EBV (LMP1)Epstein-Barr virusEpstein-Barr virus; latent membrane protein
E-CadherinE-CADDuctal vs lobular lesion of breast; positive in ductal lesion and negative in lobular neoplasia
EMAEpithelial membrane antigen, MAM6, MFGMPEpithelial membrane antigen; epithelial marker; subset of sarcoma, meningioma, and hematolymphoid neoplasm
EREstrogen receptorEstrogen receptor; predictive of endocrine therapy response in breast carcinoma; lower female genital tract carcinoma; endometrial stromal neoplasm; soft tissue lesion subset
ERCC1Excision repair cross-complementation group 1Excision repair cross-complementation group 1; lung carcinoma; predictive indicator for cisplatin therapy
Factor VIII (vWF)Von Willebrand factor, vWFVon Willebrand factor; endothelial marker; vascular neoplasm; blast cells in acute megakaryocytic leukemia
Factor XIIIaFactor XIII, F13aDermal dendrocytes and dendritic interstitial cells; used with CD34 to differentiate between dermatofibroma and dermatofibrosarcoma protuberans; fibrohistiocytic neoplasm
Fascin Hodgkin and Reed-Sternberg cells
FLI-1 Endothelial vascular cells/tumor; Ewing sarcoma/PNET; lymphoblastic lymphoma/leukemia
FSHFollicle stimulating hormoneFollicular-stimulating hormone; anterior pituitary
Galectin-3GAL3Benign vs malignant thyroid follicular neoplasm, in particular papillary carcinoma
Gastrin Gastric carcinoid; pancreatic endocrine neoplasm subset
GCDFP-15Gross cystic disease fluid protein 15, BRST-2Gross cystic disease fluid protein-15; breast carcinoma; salivary and sweat gland neoplasm
GFAPGlial fibrillary acidic proteinGlial fibrillary acidic protein; glioma; lesion with glial differentiation; salivary gland tumor; neural neoplasm subset
GlucagonGLUPancreatic endocrine neoplasm
Glycophorin AGPH-AErythroid cells
Glypican-3GPC3Hepatocellular carcinoma; germ cell tumor; yolk sac tumor
Granzyme B Cytotoxic T-cell subset; NK cells
Growth Hormone (GH)GH, hGHGrowth hormone; anterior pituitary
GSTGlutathione S-transferase p, GST pi, GST P1Distinguish Hodgkin disease and histiocytic malignancy from T-cell lymphoma
HAM 56HAM 56, anti-macrophage, macrophageHistiocytes
HBME-1Human mesothelial cellMesothelial cells; subset of adenocarcinoma, in particular lower female genital tract origin; papillary carcinoma of the thyroid
HBP (H. pylori)Helicobacter pylori, H. pylori, HBPHelicobacter pylori
HCAgHepatitis C antigenHepatitis C antigen
HCGBeta-HCG, B-HCG, human chorionic gonadotropinHuman chorionic gonadotropin (beta); germ cell tumor; trophoblastic disease
Hemoglobin AHgB A, HEMGL AFRed cell precursors
HEP B CORE (HBcAg)Hepatitis B core antigen, HBVc, HBcAgHepatitis B core antigen; hepatitis B
HEP B SURF (HBsAg)Hepatitis B surface antigen, HBVs, HBsAgHepatitis B surface antigen; hepatitis B
HepPar 1HepatocyteHepatocellular carcinoma; hepatoid tumor; germ cell tumor
HER2HER2/neu, c-erb2, HerceptestHER-2 protein overexpression; FDA-approved test for detection of HER2/neu; prognostic and predictive indicator in breast carcinoma
Herpes IHerpes simplex virus 1 antigen, HSV-1Herpes simplex virus type I
Herpes IIHerpes simplex virus II antigen, HSV-IIHerpes simplex virus type II
HHV-8Human herpesvirus, type 8, HHV8 latent nuclear antigen, LNAHuman herpesvirus 8; Kaposi’s sarcoma; primary effusion lymphoma
HLA-DRHLA-DRHuman leukocyte antigen; MHC class II antigen; B-cells; monocytes; myeloid cells; AML; ALL
HMB-45MelanosomeMelanoma-associated marker; melanocytic lesion; pecoma
HPLHuman placental lactogen, human chorionic somatomammotropinHuman placental lactogen; intermediate trophoblasts; placental site trophoblastic lesion
HPV−IHCHuman papilloma virus antigen, papillomavirus, HPV IHCHuman papilloma virus
HPV (6/11)−ISHHuman papilloma virusLow-risk human papilloma virus subtypes
HPV (16/18)−ISHHuman papilloma virusHigh-risk human papilloma virus subtypes
HPV (31/33)−ISHHuman papilloma virusHigh-risk human papilloma virus subtypes
HPV WSS−ISHHuman papilloma virusHuman papilloma virus wide screen; subtypes (6, 11, 16, 18, 30, 31, 33, 35, 45, 51, 52)
HPV High−ISHHuman papilloma virus, high risk by ISH, HPV III, HPV HR (16/18)Human papilloma virus probe cocktail; subtypes (16, 18, 31, 33, 35, 45, 51, 52, 56, 58, 59, 68, 70); types 16 and 18 are associated with cervical, vaginal, and vulvar malignancies
HPV Low−ISHHuman papilloma virus, low risk by ISH, HPV II, HPV LR (6/11)Human papilloma virus probe cocktail; subtypes (6, 11, 42, 43, 44); types 6 and 11 are associated with benign diseases (ie, genital warts)
HPV High & Low−ISHHuman papilloma virus, high risk and low risk by ISHHuman papilloma virus high-and-low-probe cocktails; subtypes (6, 11, 16, 18, 31, 33, 35, 42, 43, 44, 45, 51, 52, 56, 58, 59, 68, 70)
IgAImmunoglobulin A, alpha-heavy chainImmunoglobulin A heavy chain
IgDImmunoglobulin D, kappa-heavy chainImmunoglobulin D heavy chain
IgGImmunoglobulin G, gamma-heavy chainImmunoglobulin G heavy chain
IgG4MRQ-44IgG4-related sclerosing disease
IgMImmunoglobulin M, mu-heavy chainImmunoglobulin M heavy chain
InhibinInhibin alphaSex cord stromal and adrenal cortical tumor; steroid lesion of the ovary
Insulin Pancreatic endocrine neoplasm
JC Virus−ISHJC (PML)Progressive multifocal leukoencephalopathy virus
Kappa−IHCKappa light chain immunoglobulinImmunoglobulin light chain; B-cells and plasma cells
Kappa−ISHKappa by ISHImmunoglobulin light chain; B-cells and plasma cells - RNA
KER, PANPan-cytokeratin (AE1/AE3/PCK26), NY utilizes Pan-cytokeratin as AE1/AE3Broad-spectrum cytokeratin cocktail
Ki-67Ki67Cell proliferation marker
Lambda−IHCLambda light chain immunoglobulinImmunoglobulin light chain; B-cells and plasma cells
Lambda−ISHLambda by ISHImmunoglobulin light chain; B-cells and plasma cells - RNA
LHLuteinizing hormoneLuteinizing hormone; anterior pituitary
Lipase Exocrine pancreas; acinar cell tumor
Lysozyme (MURA)MURA, muramidaseMuramidase; AML; granulocytic sarcoma; histiocytic differentiation
MammaglobinMAMBreast carcinoma; salivary gland lesion and sweat gland neoplasm
MART-1NY utilizes clone M2-7C10+M29E3Melanoma-associated marker
MBPMyelin basic proteinMyelin basic protein; mucin; pancreatic carcinoma vs chronic pancreatitis; colorectal carcinoma; endometrial carcinoma; Barrett's esophagus
M-Cell TryptaseTryptase, mast cell tryptaseMast cells
MEL-5 Melanoma-associated marker
Melan-AMART-1, MELAN-AIS, NY utilizes clone A103Melanoma-associated marker; melanocytic lesion and adrenal cortical neoplasm; pecoma
Melan-A/Ki-67 Double stain; useful to distinguish malignant melanoma from benign melanocytic proliferation
MesothelinMesoMesothelioma
MiTFMicrophthalmia associated transcription factor, MiTFMalignant melanoma; melanocytic lesion
MLH-1hMLH-1DNA mismatch repair protein
MOC-31MOC-31, epithelial-related antigenEpithelial differentiation; adenocarcinoma vs mesothelioma
MPOMyeloperoxidase, MPXMyeloperoxidase; AML; granulocytic sarcoma
MSH-2hMSH2DNA mismatch repair protein
MSH-6hMSH6DNA mismatch repair protein
MUC1 Pancreatobiliary and extra-pancreatobiliary non-mucinous adenocarcinoma
MUC2 Colorectal adenocarcinoma and mucinous adenocarcinoma of various sites
MUC4 Epithelial tumor (breast, lung, cervix); pancreatic carcinoma
MUC5ACMuc-5AC glycoproteinMUC5AC glycoprotein; distinguish primary mucinous ovarian tumor from colonic carcinoma metastatic to the ovary
MUM-1MUM1, IRF4, multiple myeloma 1, PIPPlasma cells; post-germinal B-cells; activated T-cells; Reed-Sternberg cells; DLBCL subset
MYO DIMyoD1Rhabdomyosarcoma
Myogenin Rhabdomyosarcoma
Myoglobin Rhabdomyosarcoma
Myosin Heavy ChainSMM-HC, SMM, myosin smooth muscleSmooth-muscle myosin heavy chain; breast myoepithelial cells
Napsin ANAPSALung adenocarcinoma
NB84a Neuroblastoma tumor cells (for bone marrow aspirate and stem cell products, fresh specimen only)
NEU-N Neuronal differentiation
NFNeurofilamentNeurofilament; Merkel cells and neural tumor
NK1-C3NK1/C3, NKI, melanoma-associated antigenMelanoma-associated marker; melanocytic lesion and neurothekeoma
NPMNucleophosminNucleophosmin; nucleophosmin mutations in AML
NSENeuron specific enolaseNeuron-specific enolase; present in neurons and neuroendocrine cells (central and peripheral)
OCT-2 B-cell lymphocyte transcription factor; B-cells
OCT-3/4 Testicular germ cell tumor, in particular seminoma and embryonal carcinoma
OSCARAnti-cytokeratin (OSCAR)Broad-spectrum cytokeratin; epithelial lesion
p16p16, P16INK4A, MTS1, CDKN2HPV-associated dysplasia/carcinoma (CINtec® p16INK4a)
p21p21, P21waf1, cip1, Sdi1, Pic1Tumor suppressor gene
p27/Kip1p27, p27Kip1Cyclin-dependent kinase inhibitor
p53p53Mutated tumor suppressor gene
p57KIP2Molar vs non-molar gestation; distinguish complete hydatidiform mole (CHM) from partial hydatidiform mole (PHM) and hydropic villi
p63p63Prostatic basal cells; breast myoepithelial cells; squamous cell carcinoma
p120p120 cateninDuctal vs lobular breast lesion; lobular breast carcinoma
P504Sp504S, AMACR, racemaseProstatic carcinoma and high-grade PIN; subset of renal cell carcinoma
Pan MelanomaNY/LA utilizes (HMB-45, MART-1, & Tyrosinase); IRV utilizes (MART-1, S100, & Tyrosinase)Melanoma and melanocytic lesion; pecoma
PANC.POLYPancreatic polypeptide, PPPancreatic islet-cell tumor subset
Parvovirus B19Parvovirus B19, PVB19Parvovirus
PAX-2 Renal cell carcinoma
PAX-5PAX-5, Pan B-cellB-cell transcription factor; B-cells; Reed-Sternberg cells; subset of carcinoma including small-cell carcinoma
PAX-5/CD43 Double stain; useful for the identification of CD43- coexpressing B-cell lymphoma
PAX-5/CD5 Double stain; useful for the identification of CD5- coexpressing B-cell lymphoma
PAX-8 Renal cell carcinoma
PC (P. carinii)Pneumocystis carinii, P. carinii, PCP, PCPneumocystis carinii
PD1 Angio immunoblastic T-cell lymphoma (AITL); germinal center T-cells
Perforin Lymphomas of cytotoxic or NK derivation
PGP 9.5Protein gene product 9.5Protein gene product 9.5; neuroendocrine tumor
PLAPPlacental alkaline phosphatasePlacental alkaline phosphatase; germ cell tumor; trophoblastic disease and subset of adenocarcinoma
PMS-2 DNA mismatch repair protein
PRProgesterone receptor, PgRProgesterone receptor; predictive of endocrine therapy response in breast carcinoma; lower female genital tract carcinoma; endometrial stromal neoplasm; soft tissue lesion subset
ProlactinPL, PROAnterior pituitary hormone
PSAProstate specific antigenProstate-specific antigen; primary and metastatic prostatic neoplasm
PSAPHPAP, PACP, prostatic acid phosphataseProstatic acid phosphatase; primary and metastatic neoplasm; carcinoid tumor subset
PSMAPSM, FOLH, GCP2Prostate adenocarcinoma
PTENMMAC, TEP1Cowden syndrome; carcinoma of the bladder, breast, endometrium, head and neck, kidney, lung, prostate, stomach, and thyroid; glioblastoma; melanoma
PTHParathyroid hormoneParathyroid hormone; parathyroid neoplasm
PTSProstate triple stain, TriView™ ProstateProstate triple stain (P504S, p63, CK903); useful for the diagnosis of PIN/adenosis vs prostate carcinoma
RBRetinoblastomaRetinoblastoma gene protein; retinoblastoma
RCC (PNRA)RCC, PNRA, renal cell carcinoma antigen, gp200Renal cell carcinoma
S6s6Correlates with an increase in translation, particularly mRNAs with an oligopyrimidine tract
S100S-100Neural tumor; melanoma; chondrocytes; epithelial neoplasm subset
SerotoninSEROCarcinoid; pancreatic endocrine neoplasm
SomatostatinSOMASomatostatin; islet cell tumor; carcinoid; pancreatic endocrine neoplasm
Surfactant (SP-A)SP-A, surfactant protein A, surfactant apoprotein A (SP-A), PE10Surfactant protein A; lung adenocarcinoma
SynaptophysinSYNNeural and neuroendocrine-derived tumor
SynucleinAlpha-synucleinNeurodegenerative diseases (synucleinopathies); Parkinson's disease
TAU Neurofibrillary tangles; Lewy bodies
TCL-1 Ewing sarcoma/PNET; blastic plasmacytoid dendritic cell neoplasm (BPDCN)
TCR βTCR beta F1Alpha-beta T-cells
TdTTerminal deoxynucleotidyl transferaseTerminal deoxynucleotidyl transferase; cortical thymocytes; B-ALL; T-ALL
ThrombomodulinCD141, TM, CD141, ThromboMesothelial cells; mesothelioma; lymphatic and vascular tumor
ThyroglobulinTHYRO, TGBFollicular and papillary carcinoma of the thyroid
TIA-1T-cell intracytoplasmic antigenT-cell intracytoplasmic antigen; cytotoxic T-cell subset
TOXOToxoplasma gondii, toxoplasmosisToxoplasmosis
TRAPTartrate-resistant acid phosphataseTartrate-resistant acid phosphatase; hairy cell leukemia
TriView™ BreastBreast triple stain, breast microinvasion, CK5/p63/LMWBreast triple stain (CK5/p63/LMW); useful to differentiate DCIS from microinvasive breast carcinoma; differentiate radial scar from infiltrating carcinoma
TriView™ ProstatePTS, PIN4, PIN 4 cocktailProstate triple stain (P504S, p63, CK903); useful for the diagnosis of PIN/adenosis vs prostate carcinoma
Trypsin Exocrine pancreas; acinar cell tumor
TSThymidylate synthaseThymidylate synthase; prognostic and predictive indicator for 5-FU-based chemotherapy in colorectal carcinoma
TSHThyroid stimulating hormoneThyroid-stimulating hormone; anterior pituitary
TTF-1Thyroid transcription factor-1, TTFThyroid transcription factor-1; lung and thyroid carcinoma; subset of small cell carcinoma
TyrosinaseTyroMalignant melanoma; melanocytic lesion
Ubiquitin Neurofibrillary tangles; Lewy bodies
UroplakinUroplakin III, UPIIIUrinary tract transitional cell carcinoma (primary and metastatic)
VEGFVascular endothelial growth factor, vascular permeability factor (VPF), VEGFRVascular endothelial growth factor; stimulates endothelial cell proliferation; induces microvessel permeability; prognostic indicator
Villin Differentiate gastrointestinal adenocarcinoma, neuroendocrine carcinoma, and ovarian adenocarcinoma from other adenocarcinoma; label Merkel cells of the skin
Vimentin (VIM) Mesenchymal neoplasms; malignant melanoma and subsets of carcinoma and lymphoma
VIPVasoactive intestinal polypeptideVasoactive intestinal polypeptide; pancreatic endocrine neoplasm
VZVVaricella-Zoster virusVaricella-Zoster virus
WT1 (M) N-TerminusWilms' tumor proteinWilms' tumor protein; mesothelial cells; malignant mesothelioma; ovarian adenocarcinoma; sex cord stromal tumor of the ovary; endometrioid stromal neoplasm
WT1 (P) C-TerminusWilms' tumor proteinWilms' tumor protein carboxyl terminal; desmoplastic small round cell tumor
ZAP-70 T-cells; CLL/SLL prognosis

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