76
|
Bensinger W, Wang M, Orlowski RZ, Alsina M, Martin T, Singhal S, Gabrail NY, Vallone M, Kauffman M, Niesvizky R. Dose-escalation study of carfilzomib (CFZ) plus lenalidomide (LEN) plus low-dose dexamethasone (Dex) (CRd) in relapsed/refractory multiple myeloma (R/R MM). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.8029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
77
|
Edwards BJ, Gradishar WJ, Raisch DW, Bunta A, Samaras AT, West DP, Mckoy JM, Singhal S, Bennett CL. Hip fractures as a complication of cancer care in perimenopausal women with breast cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e11086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
78
|
Wolf JL, Vij R, Lonial S, Wang M, Jagannath S, Singhal S, Le MH, Kirk C, Arastu-Kapur S, Siegel DS. Neurotoxic and peripheral neuropathic effects in preclinical and clinical studies of carfilzomib (CFZ), a novel proteasome inhibitor (PI). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.8135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
79
|
Heuck CJ, Mehta J, Pulliam N, Meagher R, Zhou L, Vickrey E, Voigt E, Greally J, Verma A, Singhal S. Multiple myeloma is characterized by widespread epigenomic alterations with prognostic implications. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.8117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
80
|
Uddin G, Shoeb D, Solaiman S, Marley R, Gore C, Ramsay M, Harris R, Ushiro-Lumb I, Moreea S, Alam S, Thomas HC, Khan S, Watt B, Pugh RN, Ramaiah S, Jervis R, Hughes A, Singhal S, Cameron S, Carman WF, Foster GR. Prevalence of chronic viral hepatitis in people of south Asian ethnicity living in England: the prevalence cannot necessarily be predicted from the prevalence in the country of origin. J Viral Hepat 2010; 17:327-35. [PMID: 20002307 DOI: 10.1111/j.1365-2893.2009.01240.x] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The prevalence of hepatitis B and hepatitis C in immigrant communities is unknown. Immigrants from south Asia are common in England and elsewhere, and the burden of viral hepatitis in these communities is unknown. We aimed to determine the prevalence of viral hepatitis in immigrants from south Asia living in England, and we therefore undertook a community-based testing project in such people at five sites in England. A total of 4998 people attending community centres were screened for viral hepatitis using oral fluid testing. The overall prevalence of anti-hepatitis C virus (HCV) in people of south Asian origin was 1.6% but varied by country of birth being 0.4%, 0.2%, 0.6% and 2.7% in people of this ethnic group born in the UK, India, Bangladesh and Pakistan, respectively. The prevalence of hepatitis B surface antigen was 1.2%-0.2%, 0.1%, 1.5% and 1.8% in people of this ethnic group born in the UK, India, Bangladesh and Pakistan, respectively. Analysis of risk factors for HCV infection shows that people from the Pakistani Punjab and those who have immigrated recently are at increased risk of infection. Our study suggests that migrants from Pakistan are at highest risk of viral hepatitis, with those from India at low risk. As prevalence varies both by country and region of origin and over time, the prevalence in migrant communities living in western countries cannot be easily predicted from studies in the country of origin.
Collapse
|
81
|
Singhal S, Lawrence J, Salt T, Khaw P, Limb G. Triamcinolone attenuates macrophage/microglia accumulation associated with NMDA-induced RGC death and facilitates survival of Müller stem cell grafts. Exp Eye Res 2010; 90:308-15. [DOI: 10.1016/j.exer.2009.11.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2009] [Revised: 11/10/2009] [Accepted: 11/12/2009] [Indexed: 11/29/2022]
|
82
|
Singhal S, Bedard P, Ignatiadis M, Haibe-Kains B, Desmedt C, Loi S, Evans D, Dixon J, Miller W, Sotiriou C. Early Assessment of Proliferation by the Genomic Grade Index (GGI) Predicts Response to Neo-Adjuvant Letrozole. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-09-2016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Expression of the proliferation antigen Ki-67 after short-term pre-surgical endocrine treatment is predictive of long-term relapse free survival in post-menopausal women with estrogen-receptor (ER) positive breast cancer (Dowsett et al., JNCI 2007). There are no established predictive markers of clinical response to neo-adjuvant endocrine therapy.Methods: Whole genome expression profiles (Affymetrix HG-U133A) from paired tumor biopsies before and after 10 to 14 days of neo-adjuvant letrozole were compared to tumor volume changes over 3 months of treatment for 52 post-menopausal women with hormone receptor positive breast cancer to evaluate early predictive markers of clinical response.Results: Clinical response was observed in 80% Luminal A (24/30) and 59% Luminal B (13/22) tumors (p=0.1). Baseline tumor proliferation assessed by GGI or Ki-67 mRNA expression were not predictive of clinical response (p=0.29 and p=0.73 respectively). The absolute value of GGI at Day 10 to 14 was predictive of clinical response (p=0.001), particularly for luminal B (p=0.001) but not luminal A (p=0.35) tumors. The change in GGI from baseline to Day 10 to 14 was marginally predictive of response (p=0.063). Absolute day 10 to 14 Ki67 mRNA expression and the change in Ki67 mRNA were not associated with clinical response (p=0.54 and p=0.58 respectively). Baseline, absolute Day 10 to 14, and change in the expression of the ER gene (ESR1) or an integrative gene module reflecting ER signaling were not predictive of clinical response.Conclusion: Expression of GGI after 10 to 14 days of neo-adjuvant letrozole and the change in GGI with short-term treatment are predictive of clinical response observed after 3 months of therapy. Early assessment of GGI may be useful to determine which post-menopausal patients with highly-proliferative ER-positive disease benefit from endocrine therapy.
Citation Information: Cancer Res 2009;69(24 Suppl):Abstract nr 2016.
Collapse
|
83
|
Dewan P, Pooniya V, Kaushik JS, Gomber S, Singhal S. Isolated cerebellar ataxia: an early neurological complication of enteric fever. ACTA ACUST UNITED AC 2009; 29:217-9. [PMID: 19689864 DOI: 10.1179/027249309x12467994693978] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Enteric fever is associated with a variety of clinical presentations and complications. Although central nervous system involvement is not uncommon in enteric fever, acute cerebellar ataxia as a presenting feature is rare. A 7-year-old boy with enteric fever who presented with acute cerebellar ataxia is reported.
Collapse
|
84
|
Hellerstein J, Singhal S, Qian Wang. Research challenges in control engineering of computing systems. IEEE TRANSACTIONS ON NETWORK AND SERVICE MANAGEMENT 2009. [DOI: 10.1109/tnsm.2009.04.090401] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
85
|
Gupta U, Singhal S, Taneja M. P795 Evaluation of endometrial receptivity by sonographic markers and hormonal profile in patients of unexplained infertility. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)62285-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
86
|
Gupta U, Singhal S, Sharma S. O370 Maternal mortality in tertiary care center - An analysis of factors causing delay in its prevention. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)60742-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
87
|
Prasad R, Garg R, Singhal S, Dawar R, Agarwal GG. A case-control study of tobacco smoking and tuberculosis in India. Ann Thorac Med 2009; 4:208-10. [PMID: 19881167 PMCID: PMC2801046 DOI: 10.4103/1817-1737.56007] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2009] [Accepted: 04/30/2009] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVES To evaluate the role of smoking as a risk factor for the development of pulmonary tuberculosis. MATERIALS AND METHODS A total of 111 sputum smear-positive patients of pulmonary tuberculosis and 333 controls matched for age and sex were interviewed according to a predesigned questionnaire. RESULTS The adjusted odd ratio of the association between tobacco smoking and pulmonary tuberculosis was 3.8 (95% confidence interval, 2.0 to 7.0; P value, < 0001). A positive relationship between pack years, body mass index and socioeconomic class was also observed. CONCLUSION There is a positive association between tobacco smoking and pulmonary tuberculosis.
Collapse
|
88
|
Singhal N, Dhingra N, Handa U, Mohan H, Singhal S. Fine needle aspiration cytology of spindle cell carcinoma of the tongue: a case report with emphasis on the diagnostic difficulties. Cytopathology 2008; 21:130-2. [PMID: 18691220 DOI: 10.1111/j.1365-2303.2008.00596.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
89
|
Mathur T, Singhal S, Khan S, Bhateja P, Pandya M, Rattan A, Bhatnagar PK, Upadhyay DJ, Fatma T. Effect of oxazolidinone, RBx 7644 (ranbezolid), on inhibition of staphylococcal adherence to plastic surfaces. J Chemother 2008; 20:420-7. [PMID: 18676219 DOI: 10.1179/joc.2008.20.4.420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Adhesion to biomaterial is assumed to be a crucial step in the pathogenesis of foreign body infection. Slime producing Staphylococcus epidermidis and Staphylococcus aureus have emerged as a preeminent cause of nosocomial bacteremia and infections of prosthetic medical devices. We evaluated the time-dependent anti-adhesive effect of RBx 7644 (ranbezolid), vancomycin, linezolid and quinupristin/ dalfopristin on two isolates each of S. epidermidis and S. aureus. Linezolid and quinupristin/ dalfopristin showed inhibition only at supra-inhibitory concentrations (2 and 4X MIC) following 2 and 4 h delayed treatment, whereas RBx 7644 demonstrated significant activity against adhesion of staphylococcal cells that had been treated with 2 to 6 h delay. When vancomycin treatment was delayed by 4 to 6 h, even concentrations above the MIC were unable to prevent adherence. This study indicates that RBx 7644 has anti-adhesion potential and may emerge as an important antibiotic for prevention and treatment of device-related infections caused by staphylococci.
Collapse
|
90
|
Mehta J, Carson KR, Trifilio S, Vickrey E, Allen S, Singhal S. Variation in melphalan dosing in myeloma patients undergoing high-dose chemotherapy and autotransplantation. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.7047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
91
|
Hussein MA, Richardson PG, Jagannath S, Singhal S, Bensinger W, Knight R, Zeldis JB, Yu Z, Olesnyckyj M, Anderson KC. Final analysis of MM-014: Single-agent lenalidomide in patients with relapsed and refractory multiple myeloma. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.8524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
92
|
Trifilio S, Pi J, Singhal S, Frankfurt O, Evens A, Gordon L, Tallman M, Winter J, Williams S, Mehta J. 313: Tacrolimus Dosing in Allogeneic Hematopoietic Stem-Cell Transplantation Recipients Receiving Voriconazole. Biol Blood Marrow Transplant 2008. [DOI: 10.1016/j.bbmt.2007.12.323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
93
|
Paiva CM, Kurtis B, Mekki M, Newman MA, Singhal S, Lacouture ME. Neutrophilic dermatitis associated with bortezomib in a patient with multiple myeloma. Ann Oncol 2007; 18:1744-5. [PMID: 17890215 DOI: 10.1093/annonc/mdm436] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
94
|
Mehta J, Singhal S. High-dose chemotherapy and autologous hematopoietic stem cell transplantation in myeloma patients under the age of 65 years. Bone Marrow Transplant 2007; 40:1101-14. [PMID: 17680020 DOI: 10.1038/sj.bmt.1705799] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
One or two cycles of high-dose chemotherapy with autologous hematopoietic stem cell transplantation have been shown to improve response rates and survival in myeloma. While this observation has largely been made in patients under the age of 65 years, there is evidence to suggest that the conclusions can be extrapolated to older individuals as well. In contrast to other hematologic malignancies treated with high-dose therapy, autografted myeloma patients continue to relapse several years after transplantation, and few patients are cured with this modality. However, up to a third of patients may be alive beyond a decade; some with excellent quality of life giving rise to the concept of 'operational cure'. Relapsing disease can be treated with novel agents or repeat high-dose chemotherapy and transplantation. The pressing questions to which answers are not obvious at the moment are whether tandem transplantation should be offered to all patients, and whether novel agents should be used before transplantation or reserved for relapse. Despite their excellent activity, there is no evidence so far that novel agents such as thalidomide, bortezomib and lenalidomide can replace high-dose chemotherapy and stem cell transplantation.
Collapse
|
95
|
Trifilio S, Singhal S, Williams S, Frankfurt O, Gordon L, Evens A, Winter J, Tallman M, Pi J, Mehta J. Breakthrough fungal infections after allogeneic hematopoietic stem cell transplantation in patients on prophylactic voriconazole. Bone Marrow Transplant 2007; 40:451-6. [PMID: 17589527 DOI: 10.1038/sj.bmt.1705754] [Citation(s) in RCA: 168] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Seventy-one allograft recipients receiving voriconazole, in whom complete clinical, microbiologic and pharmacokinetic data were available, were studied to determine the efficacy of voriconazole in preventing fungal infections. The length of voriconazole therapy was 6-956 days (median 133). The total number of patient-days on voriconazole was 13 805 ( approximately 38 years). A total of 10 fungal infections were seen in patients on voriconazole (18% actuarial probability at 1 year): Candida glabrata (n=5), Candida krusei (n=1), Cunninghamella (n=1), Rhizopus (n=2) and Mucor (n=1). Two of the four zygomycosis cases were preceded by short durations of voriconazole therapy, but prolonged itraconazole prophylaxis. The plasma steady-state trough voriconazole levels around the time the infection occurred were <0.2, <0.2, 0.33, 0.55, 0.63 and 1.78 microg/ml in the six candidiasis cases. Excluding the four zygomycosis cases, all the six candidiasis cases were seen among the 43 patients with voriconazole levels of < or =2 microg/ml and none among the 24 with levels of >2 microg/ml (P=0.061). We conclude that voriconazole is effective at preventing aspergillosis. However, breakthrough zygomycosis is seen in a small proportion of patients. The role of therapeutic voriconazole monitoring with dose adjustment to avoid breakthrough infections with fungi that are otherwise susceptible to the drug needs to be explored prospectively.
Collapse
|
96
|
Evens AM, Altman JK, Mittal BB, Hou N, Rademaker A, Patton D, Kaminer L, Williams S, Duffey S, Variakojis D, Singhal S, Tallman MS, Mehta J, Winter JN, Gordon LI. Phase I/II trial of total lymphoid irradiation and high-dose chemotherapy with autologous stem-cell transplantation for relapsed and refractory Hodgkin's lymphoma. Ann Oncol 2007; 18:679-88. [PMID: 17307757 DOI: 10.1093/annonc/mdl496] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The standard approach to treatment of relapsed/refractory Hodgkin's lymphoma (HL) is high-dose chemotherapy conditioning followed by autologous hematopoietic stem-cell transplantation (aHSCT). We report the results of a prospective phase I/II clinical trial of accelerated hyperfractionated total lymphoid irradiation (TLI) immediately followed by high-dose chemotherapy for relapsed/refractory HL. PATIENTS AND METHODS Forty-eight patients underwent aHSCT with either sequential TLI/chemotherapy (n = 32) or chemotherapy-alone conditioning (n = 16), based on prior radiation exposure. The first 22 patients enrolled on trial received escalating doses of etoposide (1600-2100 mg/m(2)) with high-dose carboplatin and cyclophosphamide. RESULTS No dose-limiting toxicity was seen and TLI/chemotherapy was well tolerated. The 5-year event-free survival (EFS) estimate for all patients was 44% with overall survival (OS) of 48%. Five-year EFS and OS for the TLI/chemotherapy group was 63% and 61%, respectively, compared with 6% and 27%, respectively, for the chemotherapy-alone group (P < 0.0001 and P = 0.04, respectively). Patients with primary induction failure HL who received TLI/chemotherapy had 5-year EFS and OS rate of 83%. The 100-day treatment-related mortality was 4.2% and two secondary cancers were seen. Significant factors predicting survival by multivariate analysis included TLI/chemotherapy conditioning and B symptoms at relapse. CONCLUSIONS Sequential TLI/chemotherapy conditioning for relapsed/refractory HL is safe and associated with excellent long-term survival rates.
Collapse
|
97
|
Trifilio S, Singhal S, Williams S, Winter J, Tallman M, Gordon L, Evens A, Frankfurt O, Pi J, Mehta J. 429: Voriconazole prophylaxis in patients at high risk for invasive fungal infections following allogeneic hematapoetic stem cell transplantion. Biol Blood Marrow Transplant 2007. [DOI: 10.1016/j.bbmt.2007.01.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
98
|
Mehta J, Singhal S. Rigorous administration of methotrexate and outcome of allogeneic blood stem cell transplantation. Bone Marrow Transplant 2007; 39:243-4. [PMID: 17211427 DOI: 10.1038/sj.bmt.1705570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
99
|
Gontu V, Singhal S, Bajaj N, Auer D. 1.267 Serial MRI imaging in extra-pontine myelinolysis – the MRI improves, but the patient worsens. Parkinsonism Relat Disord 2007. [DOI: 10.1016/s1353-8020(08)70507-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
100
|
Das S, Saha R, Singhal S. Enteric pathogens in north Indian patients with diarrhoea. Indian J Community Med 2007. [DOI: 10.4103/0970-0218.53389] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|