Juan F García

Hospital Universitario Marques de Valdecilla, Santander, Cantabria, Spain

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Publications (50)255.75 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: The diagnosis of primary myelofibrosis (PMF) strongly relies on the bone marrow biopsy findings, but a report model has not been standardised. Our aim was to establish general recommendations for bone marrow evaluation and standardised reporting in a case suspicious of PMF. The Delphi method was employed to obtain expert consensus. An advisory panel of 10 leading members identifies a total of 37 haematopathology experts to participate. The first Delphi round included a questionnaire with three main groups of items: minimal clinical and laboratory data considered necessary before reporting, minimal descriptive aspects to record and main histological differential diagnosis. The final report content was based on consensus obtained after the second Delphi round. The minimal data considered necessary were age, splenomegaly, haemoglobin, leucocyte and platelet counts, differential blood cell count, leucoerythroblastic blood picture, lactate dehydrogenase (LDH) level, BCR-ABL and JAK2 mutational status, reticulin stain and the internal control for the reticulin staining. The minimal descriptive aspects to report were cellularity, osteosclerosis, megakaryocytic morphology and localisation, dense megakaryocytic clusters, quantity of granulocytic precursors, grade of myelofibrosis in a scale of 4, and a proposed final diagnostic approach. The entities to be considered for differential diagnosis were mainly the other classical chronic myeloproliferative neoplasms. The Delphi method is a robust tool to determine essential information to be included in a pathology report. A standardised good-quality histopathological report form may help to homogenise PMF diagnosis. A close collaboration between the pathologist and the haematologist is desirable according to our survey.
    Journal of clinical pathology 04/2014; · 2.43 Impact Factor
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    ABSTRACT: A consensus based on Delphi methodology was developed to produce a guide for the evaluation and reporting of bone marrow biopsies in patients with a clinical suspicion of myeloproliferative neoplasm with fibrosis. Ten expert haematopathologists formulated a questionnaire including: clinical and laboratory data required before regarding a biopsy suspicious for primary myelofibrosis (PMF), descriptive aspects to be reported and the main histopathological differential diagnoses to be considered. It was circulated among 37 hematopathologists and consensus was defined when more than 70% of the experts “strongly agreed” or “agreed” after two rounds. The recommendations gave rise to a proposal for a standardized diagnostic report form to aid in the diagnostic workup and homogeneous reporting of cases with a clinical suspicion of PMF.
    Revista Española de Patología. 01/2014;
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    ABSTRACT: Although specific microRNA (miRNA) signatures in classical Hodgkin lymphoma (cHL) have been proposed, their relationship with clinical outcome remains unclear. Despite treatment advances, a substantial subset of patients with advanced cHL are refractory to standard therapies based on adriamycin and its variants. Global miRNA expression data of 29 advanced cHL patients and five cHL-derived cell lines were used to identify profiles from Hodgkin-Reed-Sternberg (HRS) cells and their non-tumoural microenvironment. A cHL-miRNA signature was identified with 234 miRNAs differentially expressed. A subset of these miRNAs was associated with outcome and selected for study in an independent set of 168 cHL samples using quantitative reverse transcription polymerase chain reaction. Multivariate Cox regression analyses including cross-validation with failure-free survival (FFS) as clinical endpoint revealed a miRNA signature with MIR21, MIR30E, MIR30D and MIR92B* that identified two risk-groups with significant differences in 5-year FFS (81% vs. 35·7%; P < 0·001). Additionally, functional silencing of MIR21 and MIR30D in L428 cells showed increased sensitivity to doxorubicin-induced apoptosis, pointing towards abnormalities of mitochondrial intrinsic and TP53-CDKN1A pathways as related to miRNA deregulation in cHL. These results suggest that clinical outcome in cHL is associated with a specific miRNA signature. Moreover, functional analyses suggest a role for MIR21 and MIR30D in cHL pathogenesis and therapeutic resistance.
    British Journal of Haematology 06/2013; · 4.94 Impact Factor
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    ABSTRACT: Angioimmunoblastic T-cell lymphoma (AITL) is the second most common peripheral T-cell lymphoma with unusual clinical and pathologic features and a poor prognosis despite intensive chemotherapy. Recent studies have suggested AITL derives from follicular helper T (T(FH)) cells, but the causative molecular pathways remain largely unknown. Here we show that approximately 50% of mice heterozygous for the "san" allele of Roquin develop tumors accompanied by hypergammaglobulinemia by 6 months of age. Affected lymph nodes displayed the histologic features diagnostic of AITL, except for the presence of expanded FDC networks. Accumulation of T(FH) cells preceded tumor development, and clonal rearrangements in the TCR-β genes were present in most tumors. Furthermore, T(FH) cells exhibited increased clonality compared with non-T(FH) cells from the same lymph nodes, even in the absence of tumors. Genetic manipulations that prevent T(FH) development, such as deletion of ICOS, CD28, and SAP, partially or completely abrogated tumor development, confirming a T(FH)-derived origin. Roquin(san/+) mice emerge as a useful model to investigate the molecular pathogenesis of AITL and for preclinical testing of therapies aimed at targeting dysregulated T(FH) cells or their consequences.
    Blood 06/2012; 120(4):812-21. · 9.78 Impact Factor
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    ABSTRACT: Here, we report a retrospective series of 47 EBV-positive diffuse large B-cell lymphoma associated with advanced age. Histopathology allowed to the identification of different histological patterns: cases with polymorphic diffuse large B-cell lymphoma (29 cases), Hodgkin-like (8 cases) and polymorphic lymphoproliferative disorder-like (9 cases) patterns. One case was purely monomorphic diffuse large B-cell lymphoma. We show that this lymphoma type is a neoplasm with prominent classical and alternative nuclear factor-kB pathway activation in neoplastic cells (79% of the cases showed nuclear staining for p105/p50, 74% for p100/p52 and 63% for both proteins), with higher frequency than that observed in a control series of EBV-negative diffuse large B-cell lymphoma (χ(2) <0.001). Most cases showed an activated phenotype (95% non-germinal center (Hans algorithm); 78% activated B cell (Choi algorithm)). Clonality testing demonstrated IgH and/or K/Kde/L monoclonal rearrangements in 64% of cases and clonal T-cell populations in 24% of cases. C-MYC (1 case), BCL6 (2 cases) or IgH (3 cases) translocations were detected by FISH in 18% cases. These tumors had a poor overall survival and progression-free survival (the estimated 2-year overall survival was 40 ± 10% and the estimated 2-year progression-free survival was 36 ± 9%). Thus, alternative therapies, based on the tumor biology, need to be tested in patients with EBV-positive diffuse large B-cell lymphoma of the elderly.
    Modern Pathology 04/2012; 25(7):968-82. · 5.25 Impact Factor
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    ABSTRACT: A subset of patients with advanced classical Hodgkin's lymphoma is refractory to standard therapies. Therefore, it is relevant to identify new biologically-based prognostic markers. Recently, tumor associated macrophages have been proposed as a factor that predicts survival, although contradictory results have also been reported. Here we analyzed four macrophage markers (CD68, CD163, LYZ, and STAT1) using immunohistochemistry and automated quantification, in two independent series of advanced classical Hodgkin's lymphoma (n=266 and 103 patients, respectively). Our results did not confirm that specific macrophage immunohistochemical markers could be used as surrogates for gene expression profiling studies. Survival analyses did not show correlation between CD163, LYZ or STAT1 and either failure-free or disease-specific survival. There was an association between CD68 and disease-specific survival, but it was not consistent in both series. In conclusion, individual tumor associated macrophage markers cannot be used to predict outcome before technical standardization and prospective validation in independent series of patients with comparable stages and treatments.
    Haematologica 02/2012; 97(7):1080-4. · 5.94 Impact Factor
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    ABSTRACT: The International Prognostic Score (IPS) is the most widely used system to date for identifying risk groups for the outcome of patients with advanced Hodgkin lymphoma, although important limitations have been recognized. We analyzed the value of the IPS in a series of 311 patients with advanced classical Hodgkin lymphoma (cHL) (Ann Arbor stage III, IV or stage II with B symptoms and/or bulky masses) treated with first-line chemotherapy including adriamycin (adriamycin, bleomycin, vinblastine, dacarbazine [ABVD] or equivalent variants). In univariate and multivariate analyses, stage IV disease and age ≥ 45 years were the only factors with independent predictive significance for overall survival (OS) (p = 0.002 and p < 0.001, respectively). Stage IV was still significant for freedom from progression (FFP) (p = 0.001) and age ≥ 45 years was borderline significant (p = 0.058). IPS separates prognostic groups, as in the original publication, but this is mainly due to the high statistical significance of stage IV and age ≥ 45 years. Moreover, the combination of these two factors enables a simpler system to be constructed that separates groups with different FFP and OS. In conclusion, in our series, stage IV and age ≥ 45 years are the key prognostic factors for the outcome of advanced cHL.
    Leukemia & lymphoma 12/2011; 53(5):812-9. · 2.61 Impact Factor
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    ABSTRACT: To evaluate whether the protective effect of melatonin on H2O2-induced caspase activation and DNA fragmentation depends on the interaction between melatonin and its surface receptors. Laboratory study. Center for assisted human reproduction at a Spanish hospital. Twenty-one healthy donors. Human spermatozoa were treated with increasing concentrations of hydrogen peroxide (H2O2; 1 μM, 10 μM, 100 μM, 1 mM) and preincubated with 1 mM melatonin. Activation of caspase-3 and -9 as well as DNA fragmentation were examined by fluorescence methods. Our findings showed that H2O2 induced a significant increase in caspase-9 and caspase-3, which was dose independent. Conversely, pretreatment with melatonin reduced H2O2-mediated caspase activation in a dose-dependent way. Moreover, the antiapoptotic effects of melatonin in ejaculated human spermatozoa may involve membrane melatonin receptor MT1. In addition, we found that the survival-promoting pathway extracellular signal-regulated kinase (ERK) is likely to have a role in the protective actions of melatonin in ejaculated human spermatozoa. Finally, we confirmed these results further by demonstrating that melatonin prevention of H2O2-induced DNA fragmentation is dependent on both MT1 receptor and ERK signaling. These results indicate that the stimulation with melatonin triggers a set of events culminating in cell death prevention in ejaculated human spermatozoa.
    Fertility and sterility 06/2011; 95(7):2290-6. · 3.97 Impact Factor
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    ABSTRACT: The hedgehog signaling pathway has been shown to play a pathogenic role in diffuse large B-cell lymphoma and anaplastic large cell lymphoma, but has not been assessed in classical Hodgkin lymphoma. Glioma-associated oncogene homologues 1, 2, and 3 are transcriptional effectors of the hedgehog pathway. In this study, we first used real-time quantitative polymerase chain reaction to investigate the expressions of GLI1, GLI2, and GLI3 in 3 classical Hodgkin lymphoma cell lines. GLI1 and GLI2 were variably expressed, but GLI3 was highly expressed in all cell lines. We then used immunohistochemistry to assess glioma-associated oncogene homologues 1, 2, and 3 in 39 classical Hodgkin lymphoma patient samples. Glioma-associated oncogene homologues 1 and 2 were weakly to variably expressed in a subset of classical Hodgkin lymphoma patient samples. In contrast, glioma-associated oncogene homologue 3 showed strong, uniform nuclear expression in virtually all Hodgkin/Reed-Stenberg cells. We then performed an immunohistochemical survey of glioma-associated oncogene homologue 3 expression in 13 cases of nodular lymphocyte predominant Hodgkin lymphoma and 218 non-Hodgkin lymphomas. Most other lymphoma types showed variable or no expression of glioma-associated oncogene homologue 3, with a minor subset of cases of nodular lymphocyte predominant Hodgkin lymphoma, ALK-positive and ALK-negative anaplastic large cell lymphoma, and B-cell lymphoma, unclassifiable with features intermediate between diffuse large B-cell lymphoma and classical Hodgkin lymphoma showing a glioma-associated oncogene homologue 3 staining pattern indistinguishable from classical Hodgkin lymphoma. Our data provide a rationale to further investigate the biologic significance of glioma-associated oncogene homologue 3 in classical Hodgkin lymphoma biology.
    Human pathology 04/2011; 42(11):1643-52. · 3.03 Impact Factor
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    ABSTRACT: Serotonin is a neurotransmitter that modulates a wide range of neuroendocrine functions. However, excessive circulating serotonin levels may induce harmful effects in the male reproductive system. The objective of this study was to evaluate whether the levels of urinary 5-hydroxyindoleacetic acid (5-HIIA), a major serotonin metabolite, correlate with different classical seminal parameters. Human ejaculates were obtained from 40 men attending infertility counselling and rotating shift workers by masturbation after 4-5 days of abstinence. Urinary 5- HIIA concentration was quantified by using a commercial ELISA kit. Forward motility was assessed by a computer-aided semen analysis (CASA) system. Sperm concentration was determined using the haemocytometer method. Sperm morphology was evaluated after Diff-Quik staining, while sperm vitality was estimated after Eosin-Nigrosin vital staining. Our results show that urinary 5-HIIA levels obtained from a set of 20 volunteers negatively correlated with sperm concentration, forward motility, morphology normal range and sperm vitality. On the other hand, we checked the relationship between male infertility and urinary 5-HIIA levels in 20 night shift workers. Thus, urinary 5-HIIA levels obtained from 10 recently-proven fathers were significantly lower than those found in 10 infertile males. Additionally, samples from recent fathers exhibited higher sperm concentration, as well as better forward motility and normal morphology rate. In the light of our findings, we concluded that high serotonin levels, indirectly measured as urinary 5-HIIA levels, appear to play a role as an infertility determinant in male subjects.
    Reproductive Biology and Endocrinology 11/2010; 8:138. · 2.14 Impact Factor
  • British Journal of Haematology 10/2010; 152(3):352-6. · 4.94 Impact Factor
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    ABSTRACT: Despite improvement in the treatment of advanced classical Hodgkin lymphoma, approximately 30% of patients relapse or die as result of the disease. Current predictive systems, determined by clinical and analytical parameters, fail to identify these high-risk patients accurately. We took a multistep approach to design a quantitative reverse-transcription polymerase chain reaction assay to be applied to routine formalin-fixed paraffin-embedded samples, integrating genes expressed by the tumor cells and their microenvironment. The significance of 30 genes chosen on the basis of previously published data was evaluated in 282 samples (divided into estimation and validation sets) to build a molecular risk score to predict failure. Adequate reverse-transcription polymerase chain reaction profiles were obtained from 262 of 282 cases (92.9%). Best predictor genes were integrated into an 11-gene model, including 4 functional pathways (cell cycle, apoptosis, macrophage activation, and interferon regulatory factor 4) able to identify low- and high-risk patients with different rates of 5-year failure-free survival: 74% versus 44.1% in the estimation set (P < .001) and 67.5% versus 45.0% in the validation set (P = .022). This model can be combined with stage IV into a final predictive model able to identify a group of patients with very bad outcome (5-year failure-free survival probability, 25.2%).
    Blood 08/2010; 116(8):e12-7. · 9.78 Impact Factor
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    ABSTRACT: Surgery for rectal cancer continues to develop towards improving local control and overall survival, maintaining quality of life and preserving sphincter, genitourinary and sexual function. The multidisciplinary approach integrated in a team of different specialists ensures an individualised treatment for each patient with rectal cancer. Thus, the role of the pathologist has acquired an important relevance, not only in diagnosis, management and evaluation of the surgical specimen, but also for selection of the best adjuvant treatment. Parameters such as macroscopic quality of the mesorectum, status of the circumferential margin and lymph node harvest are considered basic criteria by current guidelines. Additionally, consistency in reporting based on the histologic classification proposed by the World Health Organization (WHO) is mandatory, along with inclusion into the pathologic report of current criteria for tumour node metastasis (TNM) staging, assessment of response to neoadjuvant chemoradiation therapy and clinically relevant molecular studies. Detection of defects in mismatch repair genes and mutational analysis of specific genes should be included as predictive markers for therapy.
    Clinical and Translational Oncology 06/2010; 12(6):431-6. · 1.28 Impact Factor
  • Histopathology 04/2010; 56(5):658-62. · 2.86 Impact Factor
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    ABSTRACT: Plasmablastic lymphoma has recently come to be considered a distinct entity among mature B cell neoplasms, although the limits with diffuse large B-cell lymphoma (DLBCL) need to be more accurately defined. Here we show the results of an immunohistochemical study of 35 cases of plasmablastic lymphoma compared with a set of 111 conventional DLBCLs. Our results demonstrate that the use of a limited combination of immunohistochemical markers (PAX5&CD20, PRDM1/BLIMP1 and XBP1s) enables the identification of a plasmablastic immunophenotype highly characteristic of plasmablastic lymphoma cases and associated with an aggressive clinical behavior. Additionally, the study shows that the acquisition of a partial plasmablastic phenotype (PRDM1/BLIMP1 expression) in DLBCL is associated with shorter survival in R-CHOP-treated patients. The use of a restricted combination of immunohistochemical markers (PAX5&CD20, PRDM1/BLIMP1 and XBP1s) enables a more accurate definition of terminal differentiation for large B-cell lymphoma.
    Haematologica 04/2010; 95(8):1342-9. · 5.94 Impact Factor
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    ABSTRACT: It is assumed somatic cells can die in the apoptotic, the autophagic, or the necrotic way; however, the mechanisms of sperm death are not clear. Here, ejaculated human spermatozoa were evaluated for apoptosis and reactive oxygen species production in the absence or presence of melatonin, and we concluded that melatonin reverses sperm apoptosis due to its free radical scavenging actions.
    Fertility and sterility 02/2010; 94(5):1915-7. · 3.97 Impact Factor
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    ABSTRACT: Apoptosis plays an essential role in normal spermatogenesis, but deregulations of this biological process, which is closely associated with male infertility, have been found. Whereas calcium homeostasis is a key regulator of cell survival, sustained elevation of intracellular calcium plays a role in apoptosis. The aim of this research was to determine the role of two different calcium mobilizing agents, hydrogen peroxide (H(2)O(2)) and the physiological agonist progesterone, on the apoptosis process of human ejaculated spermatozoa. Translocation of membrane phosphatidylserine was examined with an annexin V binding assay, DNA damage was detected by terminal deoxynucleotidyl transferase-mediated dUTP nick-end labelling (TUNEL assay) and caspase-3 activity was assessed using a fluorometric assay. After incubation of spermatozoa for 1 h with either 10 microM H(2)O(2) or 20 microM of progesterone, there was a significant increase in both caspase-3 activity and the percentage of annexin V-positive cells. Similarly, the TUNEL results were significantly higher 1 h after incubation with either 10 microM H(2)O(2) or 20 microM of progesterone. In fact, progesterone-treated cells showed a three-fold increase (from 17.6 to 52.9%) of TUNEL-positive cells compared to untreated cells, while H(2)O(2)-treated cells exhibited a two-fold increase (from 17.6 to 37.9%). In sum, our results suggest that spermatozoa treated with calcium mobilizing agents, such as H(2)O(2) and progesterone, seem to undergo an apoptosis process that is dependent on caspase-3 activation.
    Journal of Reproduction and Development 10/2009; 55(6):615-21. · 1.76 Impact Factor
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    ABSTRACT: The existence, diagnostic features, and the biological and clinical relevance of lymphocyte-rich classical Hodgkin's lymphoma remain controversial. A comparative marker analysis of lymphocyte-rich classical Hodgkin's lymphoma, nodular lymphocyte-predominance Hodgkin's lymphoma, and of other subtypes of classical Hodgkin's lymphoma was carried out. Markers were selected focusing on B-cell lineage and transcription program (OCT.1, OCT.2, BOB.1, BCL6, PAX-5, GCET1, KLHL6, and BLIMP1), the NF-κB signaling pathway (REL-B, C-REL, TRAF-1, p-50, and MUM-1) and the T-cell microenvironment (CD3, CD57, PD-1, CXCL-13, and CD10, BCL-6, CD23). Lymphocyte-rich classical Hodgkin's lymphoma cases displayed features intermediate between those of classical Hodgkin's lymphoma and nodular lymphocyte-predominance Hodgkin's lymphoma. The expression of B-cell transcription factors such as OCT.1, OCT.2, BOB.1, and BCL6 was more frequent in lymphocyte-rich classical Hodgkin's lymphoma than in classical Hodgkin's lymphoma. A follicular T-cell microenvironment was also identified in 50% of lymphocyte-rich classical Hodgkin's lymphoma cases. NF-kB markers were expressed at frequencies comparable with those observed in classical Hodgkin's lymphoma. The neoplastic cell immunophenotype and microenvironment in lymphocyte-rich classical Hodgkin's lymphoma closely mimic that which are observed in the outer zone of the germinal center, where B-cell blasts with germinal-center markers co-express CD30 and the B-cell transcription program, surrounded by follicular T-cell rosettes. Lymphocyte-rich classical Hodgkin's lymphoma seems to be characterized by a stronger expression of the B-cell transcription program by the neoplastic cells and by a follicular T-cell background, occupying an intermediate position between classical Hodgkin's lymphoma and nodular lymphocyte-predominance Hodgkin's lymphoma.Keywords: lymphocyte-rich classical Hodgkin's lymphoma, T-cell microenviroment
    Modern Pathology 05/2009; 22(8):1006-1015. · 5.25 Impact Factor
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    ABSTRACT: Asthenozoospermia is one of the most common findings present in infertile males characterized by reduced or absent sperm motility, but its aetiology remains unknown in most cases. In addition, calcium is one of the most important ions regulating sperm motility. In this study we have investigated the progesterone-evoked intracellular calcium signal in ejaculated spermatozoa from men with normospermia or asthenozoospermia. Human ejaculates were obtained from healthy volunteers and asthenospermic men by masturbation after 4-5 days of abstinence. For determination of cytosolic free calcium concentration, spermatozoa were loaded with the fluorescent ratiometric calcium indicator Fura-2. Treatment of spermatozoa from normospermic men with 20 micromolar progesterone plus 1 micromolar thapsigargin in a calcium free medium induced a typical transient increase in cytosolic free calcium concentration due to calcium release from internal stores. Similar results were obtained when spermatozoa were stimulated with progesterone alone. Subsequent addition of calcium to the external medium evoked a sustained elevation in cytosolic free calcium concentration indicative of capacitative calcium entry. However, when progesterone plus thapsigargin were administered to spermatozoa from patients with asthenozoospermia, calcium signal and subsequent calcium entry was much smaller compared to normospermic patients. As expected, pretreatment of normospermic spermatozoa with both the anti-progesterone receptor c262 antibody and with progesterone receptor antagonist RU-38486 decreased the calcium release induced by progesterone. Treatment of spermatozoa with cytochalasin D or jasplakinolide decreased the calcium entry evoked by depletion of internal calcium stores in normospermic patients, whereas these treatments proved to be ineffective at modifying the calcium entry in patients with asthenozoospermia. Our results suggest that spermatozoa from asthenozoospermic patients present a reduced responsiveness to progesterone.
    Reproductive Biology and Endocrinology 03/2009; 7:11. · 2.14 Impact Factor
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    ABSTRACT: Despite major advances in the treatment of classic Hodgkin's lymphoma (cHL), approximately 30% of patients in advanced stages may eventually die as result of the disease, and current methods to predict prognosis are rather unreliable. Thus, the application of robust techniques for the identification of biomarkers associated with treatment response is essential if new predictive tools are to be developed. We used gene expression data from advanced cHL patients to identify transcriptional patterns from the tumoral cells and their nonneoplastic microenvironment, associated with lack of maintained treatment response. Gene-Set Enrichment Analysis was used to identify functional pathways associated with unfavorable outcome that were significantly enriched in either the Hodgkin's and Reed-Sternberg cells (regulation of the G2-M checkpoint, chaperones, histone modification, and signaling pathways) or the reactive cell microenvironment (mainly represented by specific T-cell populations and macrophage activation markers). To explore the pathways identified previously, we used a series of 52 formalin-fixed paraffin-embedded advanced cHL samples and designed a real-time PCR-based low-density array that included the most relevant genes. A large majority of the samples (82.7%) and all selected genes were analyzed successfully with this approach. The results of this assay can be combined in a single risk score integrating these biological pathways associated with treatment response and eventually used in a larger series to develop a new molecular outcome predictor for advanced cHL.
    Clinical Cancer Research 03/2009; 15(4):1367-75. · 7.84 Impact Factor

Publication Stats

1k Citations
255.75 Total Impact Points

Institutions

  • 2012–2013
    • Hospital Universitario Marques de Valdecilla
      Santander, Cantabria, Spain
    • University of Texas MD Anderson Cancer Center
      • Department of Pathology
      Houston, TX, United States
  • 2010–2012
    • MD Anderson Cancer Center Madrid
      Madrid, Madrid, Spain
    • Universidad del País Vasco / Euskal Herriko Unibertsitatea
      Leioa, Basque Country, Spain
  • 2008–2011
    • Universidad de Extremadura
      • Facultad de Ciencias
      Cáceres, Extremadura, Spain
    • Center for Infertility and Human Reproduction
      Barcino, Catalonia, Spain
  • 2002–2010
    • Centro Nacional de Investigaciones Oncológicas
      • Molecular Pathology Programme
      Madrid, Madrid, Spain
  • 2009
    • Complejo Hospitalario Universitario de Badajoz
      Ara Pacis Augustalis, Extremadura, Spain
  • 2005–2007
    • Hospital Universitari de Girona Dr. Josep Trueta
      Girona, Catalonia, Spain
  • 2004
    • Hospital Universitario Ramón y Cajal
      Madrid, Madrid, Spain
    • University of Naples Federico II
      Napoli, Campania, Italy