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FOXP1 (Forkhead box P1)

Written2007-08Iwona Wlodarska
Department of Human Genetics, Catholic University Leuven, Leuven, Belgium

(Note : for Links provided by Atlas : click)


Other alias12CC4
QRF1 (Glutamine-Rich Factor 1)
LocusID (NCBI) 27086
Atlas_Id 40632
Location 3p13  [Link to chromosome band 3p13]
Location_base_pair Starts at and ends at bp from pter
Local_order 3ptelomere-3' FOXP1 5'-centromere
  FOXP1 (3p14.1): RP11-154H23 (Spectrum0range) and RP11-79P21 (SpectrumGreen) covering the 5' and the 3'end of FOXP1, respectively.
Fusion genes
(updated 2017)
Data from Atlas, Mitelman, Cosmic Fusion, Fusion Cancer, TCGA fusion databases with official HUGO symbols (see references in chromosomal bands)
AQP2 (12q13.12) / FOXP1 (3p13)CACNA2D3 (3p21.1) / FOXP1 (3p13)COL6A2 (21q22.3) / FOXP1 (3p13)
DDB1 (11q12.2) / FOXP1 (3p13)FOXP1 (3p13) / ABL1 (9q34.12)FOXP1 (3p13) / ACTR3B (7q36.1)
FOXP1 (3p13) / ARHGEF7 (13q34)FOXP1 (3p13) / ARMC8 (3q22.3)FOXP1 (3p13) / BIRC3 (11q22.2)
FOXP1 (3p13) / C5orf51 (5p13.1)FOXP1 (3p13) / COQ10B (2q33.1)FOXP1 (3p13) / EIF4E3 (3p13)
FOXP1 (3p13) / ETV1 (7p21.2)FOXP1 (3p13) / FOXP1 (3p13)FOXP1 (3p13) / GHITM (10q23.1)
FOXP1 (3p13) / PAX5 (9p13.2)FOXP1 (3p13) / PPP1CB (2p23.2)FOXP1 (3p13) / PXDNL (8q11.22)
FOXP1 (3p13) / RTL5 (Xq13.1)FOXP1 (3p13) / RUFY1 (5q35.3)FOXP1 (3p13) / SMC1A (Xp11.22)
FOXP1 (3p13) / SVBP (1p34.2)FOXP1 (3p13) / UGGT1 (2q14.3)GSK3B (3q13.33) / FOXP1 (3p13)
HLA-C (6p21.33) / FOXP1 (3p13)HSPA1A (6p21.33) / FOXP1 (3p13)NDRG1 (8q24.22) / FOXP1 (3p13)
NSD2 (4p16.3) / FOXP1 (3p13)PAX5 (9p13.2) / FOXP1 (3p13)PLPP3 (1p32.2) / FOXP1 (3p13)
PLVAP (19p13.11) / FOXP1 (3p13)PPP4R2 (3p13) / FOXP1 (3p13)PRKAR1A (17q24.2) / FOXP1 (3p13)
PSMA5 (1p13.3) / FOXP1 (3p13)SHC1 (1q21.3) / FOXP1 (3p13)STPG1 (1p36.11) / FOXP1 (3p13)
TGOLN2 (2p11.2) / FOXP1 (3p13)UGGT1 (2q14.3) / FOXP1 (3p13)VGLL4 (3p25.3) / FOXP1 (3p13)
Note chr3: 71087426-71715830 bps


Description 21 exons; the first 5 exons, the 5' part of exon 6 and the 3' part of exon 21 are non-coding.
Transcription 628405 bps mRNA; transcribed in a centromeric to telomeric orientation. Alternative splicing; 4 named isoforms (Q9H334-1,-2,-3,-4) recognized.


Note Forkhead box P1
  Schematic diagram of the Foxp1 protein indicating the localization of predicted domains and motifs. Modified from Banham AH et al., Cancer Res 61, 8820-8820, 2001.
Description The FOXP1 protein is 677-amino acid long and its molecular weight is 75317 Da. It contains two potential nucleic acid-binding motifs, including a forkhead (winged-helix) domain and C2H2 zinc finger domain. Other regions that may regulate transcription and mediate protein-protein interaction include coiled-coil, glutamine rich, S/T-rich, S/T/P-rich and acidic rich domains. Two potential nuclear localization signals (NLS) were identified at amino acid434-440 and amino acid543-546. Two potential PEST motifs are predicted in the acidic region near its COOH terminus. The FOXP1 protein contains a number potential of cyclin-cdk phosphorylation sites and a recognition site for the p70S6-kinase which is itself regulated by the PI(3)K. The FOXP1 protein forms homodimers and heterodimers with FOXP2 and FOXP4. Dimerization is required for DNA-binding.
Expression Ubiquitous expression in normal adult and fetal human tissues; highest expression in lymphoid and gastrointestinal tissues. Within the B lineage, FOXP1 is expressed modestly in progenitors, with highest levels in activated B cells and mantle zone B cells.
Localisation Predominantly nuclear
Function FOXP1 can act as a transcriptional repressor. The gene has a broad range of functions and plays an important role in cardiac and lung development, B-cell development and macrophage differentiation. FOXP1 is implicated in malignancy.
Homology Member of the broadly expressed FOXP subfamily which itself is a part of the FOX gene family of transcription factors, characterized by sharing a common DNA binding domain termed forkhead or a winged-helix domain. FOXP proteins (FOXP1, -2, -3, -4) play important roles in immune responses, organ development and cancer pathogenesis.

Implicated in

Entity t(3;9)(p14;p13) --> PAX5-FOXP1 in childhood ALL
Disease B-progenitor ALL (single case)
Cytogenetics Unknown
Abnormal Protein Contains the NH2 terminus of PAX5 with the DNA-binding paired, octapeptide and homeodomain-like domains and the COOH-terminus of FOXP1 containing its DNA-binding (Zn and FH) and transcriptional regulatory domains.
Oncogenesis The fusion protein is predicted to retain the ability to bind to PAX5 and FOXP1 transcriptional targets, but no longer provide normal transcriptional regulatory functions of both genes.
Entity t(3;14)(p14;q32)/B-cell malignancies IGH-FOXP1
Disease t(3;14)(p14;q32) resulting in upregulated expression of FOXP1, is a rare aberration in B-NHL. The translocation occurs recurrently in MALT-type of marginal zone B-cell lymphomas (MZBCL) and diffuse large B cell lymphoma (DLBCL). Single cases with variant FOXP1 translocations involving unknown non-IG loci have been reported.
Of note, a significant number of DLBCL (with a predominantly ABC-like phenotype) and extranodal MZBCL displayed a strong expression of FOXP1 which is independent of genomic rearrangements of the FOXP1 locus. FOXP1-positivity was also found in numerous cases of cutaneous B-cell lymphomas and follicular lymphomas.
Prognosis High expression of FOXP1 in DLBCL is associated with poor prognosis. Deregulation of FOXP1 in MALT lymphomas possibly leads to transformation to a more aggressive DLBCL.
Cytogenetics t(3;14) was recorded as a sole aberration and as a part of complex karyotypes. In MALT lymphomas, translocations involving FOXP1, MALT1 and BCL10 are mutually exclusive.
Hybrid/Mutated Gene No hybrid gene; 5' FOXP1 juxtaposed with 3' IGH enhancer. Molecular characteristics of FOXP1 variant translocations are unknown.
Oncogenesis The occurrence of activated FOXP1 translocations in lymphoma indicates that FOXP1 functions as an oncogene. So far, mechanisms and molecular consequences of aberrant expression of FOXP1 in lymphomas not harboring 3p14/FOXP1 rearrangements are unknown. The preliminary data suggest that not the full-length protein, but smaller FOXP1 isoforms are atypically highly expressed in ABC-DLBCL cell lines. Their role in the disease process is currently investigated.
Entity Solid tumors
Disease FOXP1 abnormalities (overexpression, mislocalization or loss of FOXP1) are observed in a wide variety of cancers, particularly of epithelial origin.
FOXP1 located in the 3p region frequently deleted in multiple types of cancers is one of a few potential tumor suppressor genes. Genomic loss of FOXP1 correlates with a decrease in FOXP1 mRNA and/or a decrease in FOXP1 protein levels in a significant number of analyzed lung cancers and head and neck cancers. In addition, an aberrant cytoplasmic localization of FOXP1 has been observed in a number of epithelial malignancies. Whether that aberrant localization may be a mechanism for inactivation of FOXP1 remains to be determined. So far, the direct evidence that FOXP1 functions as a tumor suppressor gene is limited.
In contrast, increased nuclear expression of FOXP1 has been detected in renal cell carcinoma, some prostate cancers, endometrial cancers and breast cancers. The mechanisms leading to altered expression of FOXP1 in cancer are elusive.




Expression of the forkhead transcription factor FOXP1 is associated both with hypoxia inducible factors (HIFs) and the androgen receptor in prostate cancer but is not directly regulated by androgens or hypoxia.
Banham AH, Boddy J, Launchbury R, Han C, Turley H, Malone PR, Harris AL, Fox SB
The Prostate. 2007 ; 67 (10) : 1091-1098.
PMID 17477366
Expression of the FOXP1 transcription factor is strongly associated with inferior survival in patients with diffuse large B-cell lymphoma.
Banham AH, Connors JM, Brown PJ, Cordell JL, Ott G, Sreenivasan G, Farinha P, Horsman DE, Gascoyne RD
Clinical cancer research : an official journal of the American Association for Cancer Research. 2005 ; 11 (3) : 1065-1072.
PMID 15709173
Strong expression of FOXP1 identifies a distinct subset of diffuse large B-cell lymphoma (DLBCL) patients with poor outcome.
Barrans SL, Fenton JA, Banham A, Owen RG, Jack AS
Blood. 2004 ; 104 (9) : 2933-2935.
PMID 15238418
The FOXP1 transcription factor is expressed in the majority of follicular lymphomas but is rarely expressed in classical and lymphocyte predominant Hodgkin's lymphoma.
Brown P, Marafioti T, Kusec R, Banham AH
Journal of molecular histology. 2005 ; 36 (4) : 249-256.
PMID 16200457
Forkhead transcription factors: key players in development and metabolism.
Carlsson P, Mahlapuu M
Developmental biology. 2002 ; 250 (1) : 1-23.
PMID 12297093
t(3;14)(p14;q32) results in aberrant expression of FOXP1 in a case of diffuse large B-cell lymphoma.
Fenton JA, Schuuring E, Barrans SL, Banham AH, Rollinson SJ, Morgan GJ, Jack AS, van Krieken JH, Kluin PM
Genes, chromosomes & cancer. 2006 ; 45 (2) : 164-168.
PMID 16252263
Expression of the forkhead transcription factor FOXP1 is associated with estrogen receptor alpha and improved survival in primary human breast carcinomas.
Fox SB, Brown P, Han C, Ashe S, Leek RD, Harris AL, Banham AH
Clinical cancer research : an official journal of the American Association for Cancer Research. 2004 ; 10 (10) : 3521-3527.
PMID 15161711
Loss of expression and nuclear/cytoplasmic localization of the FOXP1 forkhead transcription factor are common events in early endometrial cancer: relationship with estrogen receptors and HIF-1alpha expression.
Giatromanolaki A, Koukourakis MI, Sivridis E, Gatter KC, Harris AL, Banham AH
Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc. 2006 ; 19 (1) : 9-16.
PMID 16258506
Genetic rearrangement of FOXP1 is predominantly detected in a subset of diffuse large B-cell lymphomas with extranodal presentation.
Haralambieva E, Adam P, Ventura R, Katzenberger T, Kalla J, Höller S, Hartmann M, Rosenwald A, Greiner A, Muller-Hermelink HK, Banham AH, Ott G
Leukemia : official journal of the Leukemia Society of America, Leukemia Research Fund, U.K. 2006 ; 20 (7) : 1300-1303.
PMID 16673020
Foxp1 is an essential transcriptional regulator of B cell development.
Hu H, Wang B, Borde M, Nardone J, Maika S, Allred L, Tucker PW, Rao A
Nature immunology. 2006 ; 7 (8) : 819-826.
PMID 16819554
Human FOX gene family (Review).
Katoh M, Katoh M
International journal of oncology. 2004 ; 25 (5) : 1495-1500.
PMID 15492844
FOXP1: a potential therapeutic target in cancer.
Koon HB, Ippolito GC, Banham AH, Tucker PW
Expert opinion on therapeutic targets. 2007 ; 11 (7) : 955-965.
PMID 17614763
DNA-binding properties and secondary structural model of the hepatocyte nuclear factor 3/fork head domain.
Li C, Tucker PW
Proceedings of the National Academy of Sciences of the United States of America. 1993 ; 90 (24) : 11583-11587.
PMID 8265594
Genome-wide analysis of genetic alterations in acute lymphoblastic leukaemia.
Mullighan CG, Goorha S, Radtke I, Miller CB, Coustan-Smith E, Dalton JD, Girtman K, Mathew S, Ma J, Pounds SB, Su X, Pui CH, Relling MV, Evans WE, Shurtleff SA, Downing JR
Nature. 2007 ; 446 (7137) : 758-764.
PMID 17344859
Forkhead box protein P1 expression in mucosa-associated lymphoid tissue lymphomas predicts poor prognosis and transformation to diffuse large B-cell lymphoma.
Sagaert X, de Paepe P, Libbrecht L, Vanhentenrijk V, Verhoef G, Thomas J, Wlodarska I, De Wolf-Peeters C
Journal of clinical oncology : official journal of the American Society of Clinical Oncology. 2006 ; 24 (16) : 2490-2497.
PMID 16636337
Integrin engagement regulates monocyte differentiation through the forkhead transcription factor Foxp1.
Shi C, Zhang X, Chen Z, Sulaiman K, Feinberg MW, Ballantyne CM, Jain MK, Simon DI
The Journal of clinical investigation. 2004 ; 114 (3) : 408-418.
PMID 15286807
Reduced expressions of Foxp1 and Rassf1a genes in lung adenocarcinomas induced by N-nitrosobis(2-hydroxypropyl)amine in rats.
Shimizu K, Kato A, Hinotsume D, Shigemura M, Hanaoka M, Shimoichi Y, Honoki K, Tsujiuchi T
Cancer letters. 2006 ; 236 (2) : 186-190.
PMID 16023287
T(3;14)(p14.1;q32) involving IGH and FOXP1 is a novel recurrent chromosomal aberration in MALT lymphoma.
Streubel B, Vinatzer U, Lamprecht A, Raderer M, Chott A
Leukemia : official journal of the Leukemia Society of America, Leukemia Research Fund, U.K. 2005 ; 19 (4) : 652-658.
PMID 15703784
Multiple domains define the expression and regulatory properties of Foxp1 forkhead transcriptional repressors.
Wang B, Lin D, Li C, Tucker P
The Journal of biological chemistry. 2003 ; 278 (27) : 24259-24268.
PMID 12692134
Foxp1 regulates cardiac outflow tract, endocardial cushion morphogenesis and myocyte proliferation and maturation.
Wang B, Weidenfeld J, Lu MM, Maika S, Kuziel WA, Morrisey EE, Tucker PW
Development (Cambridge, England). 2004 ; 131 (18) : 4477-4487.
PMID 15342473
FOXP1, a gene highly expressed in a subset of diffuse large B-cell lymphoma, is recurrently targeted by genomic aberrations.
Wlodarska I, Veyt E, De Paepe P, Vandenberghe P, Nooijen P, Theate I, Michaux L, Sagaert X, Marynen P, Hagemeijer A, De Wolf-Peeters C
Leukemia : official journal of the Leukemia Society of America, Leukemia Research Fund, U.K. 2005 ; 19 (8) : 1299-1305.
PMID 15944719


This paper should be referenced as such :
Wlodarska, I
FOXP1 (forkhead box P1)
Atlas Genet Cytogenet Oncol Haematol. 2008;12(2):100-103.
Free journal version : [ pdf ]   [ DOI ]
On line version :

Other Leukemias implicated (Data extracted from papers in the Atlas) [ 14 ]
  dic(3;9)(p14;p13) PAX5/FOXP1
t(3;9)(p13;q34.1) FOXP1/ABL1
t(3;14)(p14;q32) IGH/FOXP1
t(3;9)(p13;p13) PAX5/FOXP1
t(3;9)(p13;q34) FOXP1/ABL1
t(3;11)(p13;q22) FOXP1/BIRC3
dic(3;9)(p14;p13) PAX5/FOXP1
Mucosa-associated lymphoid tissue (MALT) lymphoma
Marginal Zone B-cell lymphoma
t(3;9)(p13;q34.1) FOXP1/ABL1
t(3;14)(p14;q32) IGH/FOXP1
t(3;9)(p13;p13) PAX5/FOXP1
t(3;9)(p13;q34) FOXP1/ABL1
t(3;11)(p13;q22) FOXP1/BIRC3

Other Solid tumors implicated (Data extracted from papers in the Atlas) [ 20 ]
  Prostate tumors: an overview
t(1;3)(p13;p13) PSMA5/FOXP1
t(1;3)(q21;p13) SHC1/FOXP1
t(2;3)(p11;p13) TGOLN2/FOXP1
t(2;3)(q14;p13) FOXP1/UGGT1
t(2;3)(q14;p13) UGGT1/FOXP1
t(2;3)(q33;p13) FOXP1/COQ10B
t(3;3)(p13;p21) CACNA2D3/FOXP1
t(3;3)(p13;p25) VGLL4/FOXP1
t(3;3)(p13;q22) FOXP1/ARMC8
t(3;5)(p13;p13) FOXP1/C5orf51
t(3;5)(p13;q35) FOXP1/RUFY1
t(3;6)(p13;p21) HLA-C/FOXP1
t(3;7)(p13;q36) FOXP1/ACTR3B
t(3;8)(p13;q11) FOXP1/PXDNL
t(3;8)(p13;q24) NDRG1/FOXP1
t(3;12)(p13;q13) AQP2/FOXP1
t(3;17)(p13;q24) PRKAR1A/FOXP1
t(3;19)(p13;p13) PLVAP/FOXP1
t(3;21)(p13;q22) COL6A2/FOXP1

External links

Genomic and cartography
Gene and transcription
RefSeq transcript (Entrez)
RefSeq genomic (Entrez)
SOURCE (Princeton)Expression in : [Datasets]   [Normal Tissue Atlas]  [carcinoma Classsification]  [NCI60]
BioGPS (Tissue expression)27086
Protein : pattern, domain, 3D structure
Domain families : Pfam (Sanger)
Domain families : Pfam (NCBI)
Protein Interaction databases
Ontologies - Pathways
Clinical trials, drugs, therapy
canSAR (ICR) (select the gene name)
REVIEW articlesautomatic search in PubMed
Last year publicationsautomatic search in PubMed

© Atlas of Genetics and Cytogenetics in Oncology and Haematology
indexed on : Thu Oct 18 17:36:55 CEST 2018

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