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Publication Record


Molecular and epidemiologic characterization of Wilms tumor from Baghdad, Iraq.
Phelps HM, Al-Jadiry MF, Corbitt NM, Pierce JM, Li B, Wei Q, Flores RR, Correa H, Uccini S, Frangoul H, Alsaadawi AR, Al-Badri SAF, Al-Darraji AF, Al-Saeed RM, Al-Hadad SA, Lovvorn Iii HN
(2018) World J Pediatr 14: 585-593
MeSH Terms: Adaptor Proteins, Signal Transducing, Child, Preschool, DNA Topoisomerases, Type II, Female, Homeodomain Proteins, Humans, Immunohistochemistry, Infant, Insulin-Like Growth Factor II, Iraq, Kidney Neoplasms, Male, Multiplex Polymerase Chain Reaction, Mutation, N-Myc Proto-Oncogene Protein, Nerve Tissue Proteins, Neural Cell Adhesion Molecules, Nuclear Proteins, Poly-ADP-Ribose Binding Proteins, Receptors, Retinoic Acid, Sequence Analysis, DNA, Transcription Factors, Tumor Suppressor Protein p53, Tumor Suppressor Proteins, WT1 Proteins, Wilms Tumor, beta Catenin
Show Abstract · Added January 28, 2019
BACKGROUND - Wilms tumor (WT) is the most common childhood kidney cancer worldwide, yet its incidence and clinical behavior vary according to race and access to adequate healthcare resources. To guide and streamline therapy in the war-torn and resource-constrained city of Baghdad, Iraq, we conducted a first-ever molecular analysis of 20 WT specimens to characterize the biological features of this lethal disease within this challenged population.
METHODS - Next-generation sequencing of ten target genes associated with WT development and treatment resistance (WT1, CTNNB1, WTX, IGF2, CITED1, SIX2, p53, N-MYC, CRABP2, and TOP2A) was completed. Immunohistochemistry was performed for 6 marker proteins of WT (WT1, CTNNB1, NCAM, CITED1, SIX2, and p53). Patient outcomes were compiled.
RESULTS - Mutations were detected in previously described WT "hot spots" (e.g., WT1 and CTNNB1) as well as novel loci that may be unique to the Iraqi population. Immunohistochemistry showed expression domains most typical of blastemal-predominant WT. Remarkably, despite the challenges facing families and care providers, only one child, with combined WT1 and CTNNB1 mutations, was confirmed dead from disease. Median clinical follow-up was 40.5 months (range 6-78 months).
CONCLUSIONS - These data suggest that WT biology within a population of Iraqi children manifests features both similar to and unique from disease variants in other regions of the world. These observations will help to risk stratify WT patients living in this difficult environment to more or less intensive therapies and to focus treatment on cell-specific targets.
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27 MeSH Terms
The Clinical Presentation, Survival Outcomes, and Management of Patients With Renal Cell Carcinoma and Cardiac Metastasis Without Inferior Vena Cava Involvement: Results From a Pooled Clinical Trial Database and Systematic Review of Reported Cases.
Viteri Malone MA, Ares GR, De Velasco G, Brandão R, Lin X, Norton C, Simantov R, Moslehi J, Krajewski KM, Choueiri TK, McKay RR
(2018) Clin Genitourin Cancer 16: e327-e333
MeSH Terms: Adult, Aged, Carcinoma, Renal Cell, Clinical Trials as Topic, Female, Heart Neoplasms, Humans, Kidney Neoplasms, Male, Middle Aged, Molecular Targeted Therapy, Progression-Free Survival, Retrospective Studies, Survival Analysis, Treatment Outcome, Vena Cava, Inferior
Show Abstract · Added April 22, 2018
BACKGROUND - Cardiac metastases from renal cell carcinoma (RCC) are uncommon and there are limited data regarding the presentation and outcomes of this population. The objective of this study was to evaluate the characteristics and outcomes of patients with RCC with cardiac metastasis without inferior vena cava (IVC) involvement.
MATERIALS AND METHODS - We conducted a pooled retrospective analysis of metastatic RCC patients treated in 4 clinical trials. Additionally, we conducted a systematic review of cases reported in the literature from 1973 to 2015. Patients with cardiac metastases from RCC without IVC involvement were included. Patient and disease characteristics were described. Additionally, treatments, response to therapy, and survival outcomes were summarized.
RESULTS - Of 1765 metastatic RCC patients in the clinical trials database, 10 had cardiac metastases without IVC involvement. All patients received treatment with targeted therapy. There was 1 observed partial response (10%) and 6 patients showed stable disease (60%). The median progression-free survival was 6.9 months. The systematic review of reported clinical cases included 39 patients. In these patients, the most common cardiac site of involvement was the right ventricle (51%; n = 20). Patients were treated with medical (28%; n = 11) and/or surgical treatment (49%; n = 19) depending on whether disease was isolated (n = 13) or multifocal (n = 26).
CONCLUSION - To our knowledge, this is the first series to report on the presentation and outcomes of patients with cardiac metastasis without IVC involvement in RCC. We highlight that although the frequency of patients with cardiac metastases without IVC involvement is low, these patients have a unique clinical presentation and warrant special multidisciplinary management.
Copyright © 2017 Elsevier Inc. All rights reserved.
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16 MeSH Terms
Renal Medullary Carcinoma: Establishing Standards in Practice.
Beckermann KE, Sharma D, Chaturvedi S, Msaouel P, Abboud MR, Allory Y, Bourdeaut F, Calderaro J, de Cubas AA, Derebail VK, Hong AL, Naik RP, Malouf GG, Mullen EA, Reuter VE, Roberts CWM, Walker CL, Wood CG, DeBaun MR, Van Poppel H, Tannir NM, Rathmell WK
(2017) J Oncol Pract 13: 414-421
MeSH Terms: Anemia, Sickle Cell, Carcinoma, Medullary, Humans, Kidney Neoplasms, Practice Guidelines as Topic, Registries
Show Abstract · Added July 17, 2017
Although renal medullary carcinoma (RMC) is a rare subtype of kidney cancer, it is particularly devastating in that it is nearly uniformly lethal. No established guidelines exist for the diagnosis and management of RMC. In April 2016, a panel of experts developed clinical guidelines on the basis of a literature review and consensus statements. The goal was to propose recommendations for standardized diagnostic and management approaches and to establish an international clinical registry and biorepository for RMC. Published data are limited to case reports and small retrospective reviews. The RMC Working Group prepared recommendations to inform providers and patients faced with a low level of medical evidence. The diagnosis of RMC should be considered in all patients younger than 50 years with poorly differentiated carcinoma that arises from the renal medulla. These patients should be tested for sickle cell hemoglobinopathies, and if positive, SMARCB1/INI1 loss should be confirmed by immunohistochemistry. The majority of patients with RMC are diagnosed with metastatic disease. Upfront radical nephrectomy should be considered in patients with good performance status and low metastatic burden or after response to systemic therapy. Currently, cytotoxic, platinum-based chemotherapy provides the best, albeit brief, palliative clinical benefit. Vascular endothelial growth factor-directed therapies and mammalian target of rapamycin inhibitors are ineffective in RMC as monotherapy. Therapeutic trials of novel agents are now available for RMC, and every effort should be made to enroll patients in clinical studies.
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6 MeSH Terms
Functional KRAS mutations and a potential role for PI3K/AKT activation in Wilms tumors.
Polosukhina D, Love HD, Correa H, Su Z, Dahlman KB, Pao W, Moses HL, Arteaga CL, Lovvorn HN, Zent R, Clark PE
(2017) Mol Oncol 11: 405-421
MeSH Terms: Animals, Base Sequence, Cell Movement, Cell Proliferation, Cell Transformation, Neoplastic, Disease Progression, Enzyme Activation, Humans, Immunohistochemistry, Kidney Neoplasms, Mice, Inbred C57BL, Mutation, Neoplasm Metastasis, Phosphatidylinositol 3-Kinases, Proto-Oncogene Proteins c-akt, Proto-Oncogene Proteins p21(ras), Wilms Tumor, beta Catenin
Show Abstract · Added May 5, 2017
Wilms tumor (WT) is the most common renal neoplasm of childhood and affects 1 in 10 000 children aged less than 15 years. These embryonal tumors are thought to arise from primitive nephrogenic rests that derive from the metanephric mesenchyme during kidney development and are characterized partly by increased Wnt/β-catenin signaling. We previously showed that coordinate activation of Ras and β-catenin accelerates the growth and metastatic progression of a murine WT model. Here, we show that activating KRAS mutations can be found in human WT. In addition, high levels of phosphorylated AKT are present in the majority of WT. We further show in a mouse model and in renal epithelial cells that Ras cooperates with β-catenin to drive metastatic disease progression and promotes in vitro tumor cell growth, migration, and colony formation in soft agar. Cellular transformation and metastatic disease progression of WT cells are in part dependent on PI3K/AKT activation and are inhibited via pharmacological inhibition of this pathway. Our studies suggest both KRAS mutations and AKT activation are present in WT and may represent novel therapeutic targets for this disease.
© 2017 The Authors. Published by FEBS Press and John Wiley & Sons Ltd.
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18 MeSH Terms
Core Needle Biopsy and Fine Needle Aspiration Alone or in Combination: Diagnostic Accuracy and Impact on Management of Renal Masses.
Cate F, Kapp ME, Arnold SA, Gellert LL, Hameed O, Clark PE, Wile G, Coogan A, Giannico GA
(2017) J Urol 197: 1396-1402
MeSH Terms: Aged, Biopsy, Fine-Needle, Biopsy, Large-Core Needle, Female, Humans, Kidney Neoplasms, Male, Middle Aged, Reproducibility of Results, Retrospective Studies
Show Abstract · Added April 18, 2017
PURPOSE - Fine needle aspiration with and without concurrent core needle biopsy is a minimally invasive method to diagnose and assist in management of renal masses. We assessed the pathological accuracy of fine needle aspiration compared to and associated with core needle biopsy and the impact on management.
MATERIALS AND METHODS - We performed a single institution, retrospective study of 342 cases from 2001 to 2015 with small and large renal masses (4 or less and greater than 4 cm, respectively). Diagnostic and concordance rates, and the impact on management were analyzed.
RESULTS - Adequacy rates for fine needle aspiration only, core needle biopsy only and fine needle aspiration plus core needle biopsy were 21%, 12% and 8% (aspiration vs aspiration plus biopsy p <0.026). In the aspiration plus biopsy group adding aspiration to biopsy and biopsy to aspiration reduced the inadequacy rate from 23% to 8% and from 27% to 8% for a total reduction rate of 15% and 19%, respectively, corresponding to 32 cases (9.3%). Rapid on-site examination contributed to a 22.5% improvement in fine needle aspiration adequacy rates. In this cohort 30% of aspiration only, 5% of biopsy only and 12% of aspiration plus biopsy could not be subtyped (aspiration vs biopsy p <0.0001, aspiration vs aspiration plus biopsy p <0.0127 and biopsy vs aspiration plus biopsy p = 0.06). The diagnostic concordance rate with surgical resection was 99%. Conversion of an inadequate specimen to an adequate one by a concurrent procedure impacted treatment in at least 29 of 32 patients. Limitations include the retrospective design and accuracy measurement based on surgical intervention.
CONCLUSIONS - Fine needle aspiration plus core needle biopsy vs at least fine needle aspiration alone may improve diagnostic yield when sampling renal masses but it has subtyping potential similar to that of core needle biopsy only.
Copyright © 2017 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights reserved.
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10 MeSH Terms
Strategies to overcome therapeutic resistance in renal cell carcinoma.
Siska PJ, Beckermann KE, Rathmell WK, Haake SM
(2017) Urol Oncol 35: 102-110
MeSH Terms: Angiogenesis Inhibitors, Antineoplastic Agents, Carcinoma, Renal Cell, Clinical Trials as Topic, Costimulatory and Inhibitory T-Cell Receptors, Cytotoxicity, Immunologic, Disease Progression, Disease-Free Survival, Drug Resistance, Neoplasm, Humans, Immunotherapy, Kidney, Kidney Neoplasms, Neoplasm Recurrence, Local, Neovascularization, Pathologic, Nephrectomy, Protein Kinase Inhibitors, Receptors, Vascular Endothelial Growth Factor, Signal Transduction, TOR Serine-Threonine Kinases
Show Abstract · Added April 18, 2017
BACKGROUND - Renal cell cancer (RCC) is a prevalent and lethal disease. At time of diagnosis, most patients present with localized disease. For these patients, the standard of care includes nephrectomy with close monitoring thereafter. While many patients will be cured, 5-year recurrence rates range from 30% to 60%. Furthermore, nearly one-third of patients present with metastatic disease at time of diagnosis. Metastatic disease is rarely curable and typically lethal. Cytotoxic chemotherapy and radiation alone are incapable of controlling the disease. Extensive effort was expended in the development of cytokine therapies but response rates remain low. Newer agents targeting angiogenesis and mTOR signaling emerged in the 2000s and revolutionized patient care. While these agents improve progression free survival, the development of resistance is nearly universal. A new era of immunotherapy is now emerging, led by the checkpoint inhibitors. However, therapeutic resistance remains a complex issue that is likely to persist.
METHODS AND PURPOSE - In this review, we systematically evaluate preclinical research and clinical trials that address resistance to the primary RCC therapies, including anti-angiogenesis agents, mTOR inhibitors, and immunotherapies. As clear cell RCC is the most common adult kidney cancer and has been the focus of most studies, it will be the focus of this review.
Copyright © 2017 Elsevier Inc. All rights reserved.
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20 MeSH Terms
Bortezomib augments lymphocyte stimulatory cytokine signaling in the tumor microenvironment to sustain CD8+T cell antitumor function.
Pellom ST, Dudimah DF, Thounaojam MC, Uzhachenko RV, Singhal A, Richmond A, Shanker A
(2017) Oncotarget 8: 8604-8621
MeSH Terms: Adenocarcinoma, Animals, Antineoplastic Agents, Bortezomib, Breast Neoplasms, CD8-Positive T-Lymphocytes, Cell Line, Tumor, Cytokines, Female, Fibrosarcoma, Kidney Neoplasms, Lung Neoplasms, Lymphocytes, Tumor-Infiltrating, Mice, Inbred BALB C, Mice, Transgenic, Phosphatidylinositol 3-Kinase, Proteasome Endopeptidase Complex, Proteasome Inhibitors, Proto-Oncogene Proteins c-akt, Receptors, Cytokine, STAT5 Transcription Factor, Signal Transduction, Tumor Escape, Tumor Microenvironment
Show Abstract · Added March 14, 2017
Tumor-induced immune tolerance poses a major challenge for therapeutic interventions aimed to manage cancer. We explored approaches to overcome T-cell suppression in murine breast and kidney adenocarcinomas, and lung fibrosarcoma expressing immunogenic antigens. We observed that treatment with a reversible proteasome inhibitor bortezomib (1 mg/kg body weight) in tumor-bearing mice significantly enhanced the expression of lymphocyte-stimulatory cytokines IL-2, IL-12, and IL-15. Notably, bortezomib administration reduced pulmonary nodules of mammary adenocarcinoma 4T1.2 expressing hemagglutinin (HA) model antigen (4T1HA) in mice. Neutralization of IL-12 and IL-15 cytokines with a regimen of blocking antibodies pre- and post-adoptive transfer of low-avidity HA518-526-specific CD8+T-cells following intravenous injection of 4T1HA cells increased the number of pulmonary tumor nodules. This neutralization effect was counteracted by the tumor metastasis-suppressing action of bortezomib treatments. In bortezomib-treated 4T1HA tumor-bearing mice, CD4+T-cells showed increased IL-2 production, CD11c+ dendritic cells showed increased IL-12 and IL-15 production, and HA-specific activated CD8+T-cells showed enhanced expression of IFNγ, granzyme-B and transcription factor eomesodermin. We also noted a trend of increased expression of IL-2, IL-12 and IL-15 receptors as well as increased phosphorylation of STAT5 in tumor-infiltrating CD8+T-cells following bortezomib treatment. Furthermore, bortezomib-treated CD8+T-cells showed increased phosphorylation of mitogen-activated protein kinase p38, and Akt, which was abrogated by phosphatidylinositide 3-kinase (PI3K) inhibitor. These data support the therapeutic potential of bortezomib in conjunction with other immunotherapies to augment the strength of convergent signals from CD8+T-cell signaling molecules including TCR, cytokine receptors and downstream PI3K/Akt/STAT5 pathways to sustain CD8+T-cell effector function in the tumor microenvironment.
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24 MeSH Terms
Renal cancer subtypes: Should we be lumping or splitting for therapeutic decision making?
Haake SM, Rathmell WK
(2017) Cancer 123: 200-209
MeSH Terms: Carcinoma, Renal Cell, Decision Making, Humans, Kidney Neoplasms
Show Abstract · Added April 18, 2017
The treatment of advanced renal cell carcinoma has posed a challenge for decades, in part because of common themes related to intrinsic resistance to cytotoxic chemotherapy and the obscure biology of these cancer types. Forward movement in the treatment of the renal cell carcinomas thus can be approached in 2 ways: by splitting the tumor types along histologic and molecular features, in the hopes of coupling highly precision-focused therapy on a subset of patients who have disease with the most potential for benefit; or by lumping the various biologies and histologies together, to include the rarer renal cell carcinoma types with the more common types. The former strategy satisfies the desire for customized precision in treatment delivery, whereas the latter strategy allows clinicians to offer a wider therapeutic menu in a set of diseases we are continuing to learn about on a physiologic and molecular level. Cancer 2017;123:200-209. © 2016 American Cancer Society.
© 2016 American Cancer Society.
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Insights into the Genetic Basis of the Renal Cell Carcinomas from The Cancer Genome Atlas.
Haake SM, Weyandt JD, Rathmell WK
(2016) Mol Cancer Res 14: 589-98
MeSH Terms: Animals, Carcinoma, Renal Cell, Genome, Humans, Kidney Neoplasms
Show Abstract · Added August 8, 2016
The renal cell carcinomas (RCC), clear cell, papillary, and chromophobe, have recently undergone an unmatched genomic characterization by The Cancer Genome Atlas. This analysis has revealed new insights into each of these malignancies and underscores the unique biology of clear cell, papillary, and chromophobe RCC. Themes that have emerged include distinct mechanisms of metabolic dysregulation and common mutations in chromatin modifier genes. Importantly, the papillary RCC classification encompasses a heterogeneous group of diseases, each with highly distinct genetic and molecular features. In conclusion, this review summarizes RCCs that represent a diverse set of malignancies, each with novel biologic programs that define new paradigms for cancer biology. Mol Cancer Res; 14(7); 589-98. ©2016 AACR.
©2016 American Association for Cancer Research.
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5 MeSH Terms
Tyrosine Kinase Signaling in Clear Cell and Papillary Renal Cell Carcinoma Revealed by Mass Spectrometry-Based Phosphotyrosine Proteomics.
Haake SM, Li J, Bai Y, Kinose F, Fang B, Welsh EA, Zent R, Dhillon J, Pow-Sang JM, Chen YA, Koomen JM, Rathmell WK, Fishman M, Haura EB
(2016) Clin Cancer Res 22: 5605-5616
MeSH Terms: Carcinoma, Papillary, Carcinoma, Renal Cell, Cell Line, Tumor, Cell Survival, ErbB Receptors, Extracellular Matrix, Humans, Kidney Neoplasms, Mass Spectrometry, Phosphorylation, Phosphotyrosine, Protein Kinase Inhibitors, Protein-Tyrosine Kinases, Proteomics, Receptor Protein-Tyrosine Kinases, Signal Transduction, Tyrosine
Show Abstract · Added August 8, 2016
PURPOSE - Targeted therapies in renal cell carcinoma (RCC) are limited by acquired resistance. Novel therapeutic targets are needed to combat resistance and, ideally, target the unique biology of RCC subtypes.
EXPERIMENTAL DESIGN - Tyrosine kinases provide critical oncogenic signaling and their inhibition has significantly impacted cancer care. To describe a landscape of tyrosine kinase activity in RCC that could inform novel therapeutic strategies, we performed a mass spectrometry-based system-wide survey of tyrosine phosphorylation in 10 RCC cell lines as well as 15 clear cell and 15 papillary RCC human tumors. To prioritize identified tyrosine kinases for further analysis, a 63 tyrosine kinase inhibitor (TKI) drug screen was performed.
RESULTS - Among the cell lines, 28 unique tyrosine phosphosites were identified across 19 kinases and phosphatases including EGFR, MET, JAK2, and FAK in nearly all samples. Multiple FAK TKIs decreased cell viability by at least 50% and inhibited RCC cell line adhesion, invasion, and proliferation. Among the tumors, 49 unique tyrosine phosphosites were identified across 44 kinases and phosphatases. FAK pY576/7 was found in all tumors and many cell lines, whereas DDR1 pY792/6 was preferentially enriched in the papillary RCC tumors. Both tyrosine kinases are capable of transmitting signals from the extracellular matrix and emerged as novel RCC therapeutic targets.
CONCLUSIONS - Tyrosine kinase profiling informs novel therapeutic strategies in RCC and highlights the unique biology among kidney cancer subtypes. Clin Cancer Res; 22(22); 5605-16. ©2016 AACR.
©2016 American Association for Cancer Research.
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17 MeSH Terms