Showing posts with label Cancer. Show all posts
Showing posts with label Cancer. Show all posts

Wednesday, March 11, 2015

#NephMadness #OncoRegion VEGF Inhibitor Toxicity Abstracts


Renal Involvement in Preeclampsia: Similarities to VEGF Ablation Therapy

Janina Müller-Deile and Mario Schiffer

Division of Nephrology and Hypertension, Department of Medicine, IFB-TX Hannover, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany

Received 11 September 2010; Accepted 1 November 2010

Academic Editor: David F. Lewis

Copyright © 2011 Janina Müller-Deile and Mario Schiffer. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract

Glomerular VEGF expression is critical for the maintenance and function of an intact filtration barrier. Alterations in glomerular VEGF bioavailability result in endothelial as well as in podocyte damage. Renal involvement in preeclampsia includes proteinuria, podocyturia, elevated blood pressure, edema, glomerular capillary endotheliosis, and thrombotic microangiopathy. At least the renal signs, symptoms, and other evidence can sufficiently be explained by reduced VEGF levels. The aim of this paper was to summarize our pathophysiological understanding of the renal involvement of preeclampsia and point out similarities to the renal side effects of VEGF-ablation therapy.


Bevacizumab-Mediated Interference With VEGF Signaling Is Sufficient to Induce a Preeclampsia-Like Syndrome in Nonpregnant Women

Abstract

Preeclampsia (gestational proteinuric hypertension) complicates 5% to 8% of all pregnancies, and is a major cause of maternal and perinatal morbidity and mortality. It is a multisystem disorder specific to human pregnancy and the puerperium. Although the etiology is unknown, increasing evidence from both animal and human studies suggests that an imbalance in circulating pro-(vascular endothelial growth factor [VEGF], placental growth factor) and anti-angiogenic factors (soluble fms-like tyrosine kinase 1, soluble endoglin) may be important. Bevacizumab (Avastin®; Genentech, South San Francisco, CA), a humanized recombinant monoclonal IgG antibody that binds VEGF, has been shown to inhibit endothelial cell proliferation, suppress angiogenesis, and shrink a variety of solid tumors. We present two cases of bevacizumab toxicity that mimic preeclampsia with a reversible syndrome characterized by acute-onset severe hypertension, proteinuria, central nervous system irritability (headache, photophobia, blurred vision, seizures), abnormal laboratory tests (elevated liver function tests, thrombocytopenia), and evidence of reversible posterior leukoencephalopathy on neuroimaging. In both cases, the clinical and laboratory manifestations returned to normal with discontinuation of bevacizumab therapy and supportive care. Bevacizumab toxicity can mimic preeclampsia in nonpregnant women. These data suggest that interference with VEGF signaling is sufficient to induce a preeclampsia-like syndrome in nonpregnant patients. VEGF signaling therefore appears to play a central role—perhaps the central role—in the pathogenesis of preeclampsia, and provides a potential biomarker for the prediction, prevention, and treatment of this dangerous disorder.
Key words: Bevacizumab, Hypertension, Preeclampsia, Eclampsia, Vascular endothelial growth factor, Reversible posterior leukoencephalopathy syndrome
 
 
Anticancer Res. 2007 Sep-Oct;27(5B):3465-70.

Hypertension secondary to anti-angiogenic therapy: experience with bevacizumab.


Pande A(1), Lombardo J, Spangenthal E, Javle M.

Author information:
(1)Department of Medicine, Roswell Park Cancer Institute, Elm and Carlton Sts,
Buffalo, NY 14263, USA.

BACKGROUND: Hypertension (HT) is a common complication of anti-angiogenic
therapy. Its incidence, treatment and complications are undefined.
PATIENTS AND METHODS: Retrospective review of patients treated with bevacizumab
(BV) from 2003-5. Common toxicity criteria (CTC) for adverse events version 3.0
were used.
RESULTS: Fifty-five out of the 154 patients treated with BV (35%) experienced HT.
Eleven (20%) developed a new onset HT and 44 (80%) experienced an exacerbation of
pre-existing HT. HT developed after a median of 11 weeks at a median BV dose of
10 mg/kg. HT severity was grade 1 (n =1), grade 2 (n=29) or grade 3 (n=22); 3
experienced hypertensive complications. HT was controlled in 47 (85%); BV was
discontinued in 3. The angiotensin-converting enzyme inhibitor (ACE-I), quinapril
was commonly used and resulted in better HT control than ACE-II, calcium channel
or beta antagonists.
CONCLUSION: HT associated with bevacizumab therapy is a manageable toxicity with
the use of ACE-I.

PMID: 17972502  [PubMed - indexed for MEDLINE]

 
 
Am J Kidney Dis. 2007 Feb;49(2):186-93.

Risks of proteinuria and hypertension with bevacizumab, an antibody against vascular endothelial growth factor: systematic review and meta-analysis.


Zhu X(1), Wu S, Dahut WL, Parikh CR.

Author information:
(1)Division of Nephrology, SUNY at Stony Brook, NY, USA.
xiaolei.zhu@stonybrook.edu

BACKGROUND: Angiogenesis inhibitors have emerged as an effective targeted therapy
in the treatment of patients with many cancers. One of the most widely used
angiogenesis inhibitors is bevacizumab, a neutralizing antibody against vascular
endothelial growth factor. The overall risk of proteinuria and hypertension in
patients with cancer on bevacizumab therapy is unclear. We performed a systematic
review and meta-analysis of published clinical trials of bevacizumab to quantify
the risk of proteinuria and hypertension.
METHODS: The databases MEDLINE (OVID, 1966 to June 2006) and Web of Science and
abstracts presented at the American Society of Clinical Oncology annual meetings
from 2004 through 2006 were searched to identify relevant studies. Eligible
studies were randomized controlled trials of patients with cancer treated with
bevacizumab that described the incidence of proteinuria and hypertension.
Relative risk (RR) was calculated by using the fixed-effects model.
RESULTS: A total of 1,850 patients were included in the 7 trials identified from
the literature. Bevacizumab was associated with a significant increased risk of
proteinuria (RR, 1.4 with low-dose bevacizumab; 95% confidence interval [CI], 1.1
to 1.7; RR, 2.2 with high dose; 95% CI, 1.6 to 2.9). Hypertension also was
increased significantly among patients receiving bevacizumab (RR, 3.0 for low
dose; 95% CI, 2.2 to 4.2; RR, 7.5 for high dose; 95% CI, 4.2 to 13.4).
CONCLUSION: There was a significant dose-dependent increase in risk of
proteinuria and hypertension in patients with cancer who received bevacizumab.

PMID: 17261421  [PubMed - indexed for MEDLINE]

 

#NephMadness #OncoRegion #Bracket Cancer in Tx Patients Studies Abstracts


JAMA. 2011 Nov 2;306(17):1891-901. doi: 10.1001/jama.2011.1592.
Spectrum of cancer risk among US solid organ transplant recipients.

Engels EA(1), Pfeiffer RM, Fraumeni JF Jr, Kasiske BL, Israni AK, Snyder JJ,
Wolfe RA, Goodrich NP, Bayakly AR, Clarke CA, Copeland G, Finch JL, Fleissner ML,
Goodman MT, Kahn A, Koch L, Lynch CF, Madeleine MM, Pawlish K, Rao C, Williams
MA, Castenson D, Curry M, Parsons R, Fant G, Lin M.

Author information:
(1)National Cancer Institute, 6120 Executive Blvd, EPS 7076, Rockville, MD 20892,
USA. engelse@exchange.nih.gov

Comment in
    JAMA. 2012 Feb 15;307(7):663; author reply 663-4.

CONTEXT: Solid organ transplant recipients have elevated cancer risk due to
immunosuppression and oncogenic viral infections. Because most prior research has
concerned kidney recipients, large studies that include recipients of differing
organs can inform cancer etiology.
OBJECTIVE: To describe the overall pattern of cancer following solid organ
transplantation.
DESIGN, SETTING, AND PARTICIPANTS: Cohort study using linked data on solid organ
transplant recipients from the US Scientific Registry of Transplant Recipients
(1987-2008) and 13 state and regional cancer registries.
MAIN OUTCOME MEASURES: Standardized incidence ratios (SIRs) and excess absolute
risks (EARs) assessing relative and absolute cancer risk in transplant recipients
compared with the general population.
RESULTS: The registry linkages yielded data on 175,732 solid organ transplants
(58.4% for kidney, 21.6% for liver, 10.0% for heart, and 4.0% for lung). The
overall cancer risk was elevated with 10,656 cases and an incidence of 1375 per
100,000 person-years (SIR, 2.10 [95% CI, 2.06-2.14]; EAR, 719.3 [95% CI,
693.3-745.6] per 100,000 person-years). Risk was increased for 32 different
malignancies, some related to known infections (eg, anal cancer, Kaposi sarcoma)
and others unrelated (eg, melanoma, thyroid and lip cancers). The most common
malignancies with elevated risk were non-Hodgkin lymphoma (n = 1504; incidence:
194.0 per 100,000 person-years; SIR, 7.54 [95% CI, 7.17-7.93]; EAR, 168.3 [95%
CI, 158.6-178.4] per 100,000 person-years) and cancers of the lung (n = 1344;
incidence: 173.4 per 100,000 person-years; SIR, 1.97 [95% CI, 1.86-2.08]; EAR,
85.3 [95% CI, 76.2-94.8] per 100,000 person-years), liver (n = 930; incidence:
120.0 per 100,000 person-years; SIR, 11.56 [95% CI, 10.83-12.33]; EAR, 109.6 [95%
CI, 102.0-117.6] per 100,000 person-years), and kidney (n = 752; incidence: 97.0
per 100,000 person-years; SIR, 4.65 [95% CI, 4.32-4.99]; EAR, 76.1 [95% CI,
69.3-83.3] per 100,000 person-years). Lung cancer risk was most elevated in lung
recipients (SIR, 6.13 [95% CI, 5.18-7.21]) but also increased among other
recipients (kidney: SIR, 1.46 [95% CI, 1.34-1.59]; liver: SIR, 1.95 [95% CI,
1.74-2.19]; and heart: SIR, 2.67 [95% CI, 2.40-2.95]). Liver cancer risk was
elevated only among liver recipients (SIR, 43.83 [95% CI, 40.90-46.91]), who
manifested exceptional risk in the first 6 months (SIR, 508.97 [95% CI,
474.16-545.66]) and a 2-fold excess risk for 10 to 15 years thereafter (SIR, 2.22
[95% CI, 1.57-3.04]). Among kidney recipients, kidney cancer risk was elevated
(SIR, 6.66 [95% CI, 6.12-7.23]) and bimodal in onset time. Kidney cancer risk
also was increased in liver recipients (SIR, 1.80 [95% CI, 1.40-2.29]) and heart
recipients (SIR, 2.90 [95% CI, 2.32-3.59]).
CONCLUSION: Compared with the general population, recipients of a kidney, liver,
heart, or lung transplant have an increased risk for diverse infection-related
and unrelated cancers.

PMCID: PMC3310893
PMID: 22045767  [PubMed - indexed for MEDLINE]


Nat Immunol. 2002 Nov;3(11):991-8.
Cancer immunoediting: from immunosurveillance to tumor escape.

Dunn GP(1), Bruce AT, Ikeda H, Old LJ, Schreiber RD.

Author information:
(1)Department of Pathology and Immunology, Center for Immunology, Washington
University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA.

Comment in
    Nat Immunol. 2003 Mar;4(3):201.
    Lancet Oncol. 2004 Jul;5(7):397-8.
    Nat Immunol. 2004 Jan;5(1):3-4; author reply 4-5.

The concept that the immune system can recognize and destroy nascent transformed
cells was originally embodied in the cancer immunosurveillance hypothesis of
Burnet and Thomas. This hypothesis was abandoned shortly afterwards because of
the absence of strong experimental evidence supporting the concept. New data,
however, clearly show the existence of cancer immunosurveillance and also
indicate that it may function as a component of a more general process of cancer
immunoediting. This process is responsible for both eliminating tumors and
sculpting the immunogenic phenotypes of tumors that eventually form in
immunocompetent hosts. In this review, we will summarize the historical and
experimental basis of cancer immunoediting and discuss its dual roles in
promoting host protection against cancer and facilitating tumor escape from
immune destruction.

PMID: 12407406  [PubMed - indexed for MEDLINE]

#NephMadness #OncoRegion #Bracket Tx after Cancer Studies Abstracts

 Ann Transplant. 1997;2(4):14-7.


Evaluation of transplant candidates with pre-existing malignancies.


Penn I(1).

Author information:
(1)Department of Surgery, University of Cincinnati Medical Center, USA.

A retrospective study was done of the recurrence rates of 1297 preexisting tumors
in renal transplant recipients. Of 1137 neoplasms that were treated prior to
transplantation, the recurrence rate was 21%, and it was 33% in 99 cancers
treated after transplantation. Fifty-four percent of recurrences in the
pretransplant-treated group occurred among malignancies treated within 2 years of
transplantation, 33% in those treated 2-5 years before transplantation, and 13%
among those treated more than 5 years pretransplantation. Among the 31 neoplasms
in the last group 52% of recurrences occurred within 2 years after
transplantation. Among those cancers treated pretransplantation the highest
recurrence rates occurred with breast carcinomas (23%), symptomatic renal
carcinomas (27%), sarcomas (29%), bladder carcinomas (29%), nonmelanoma skin
cancers (53%) and multiple myeloma (67%). In the tumors treated
posttransplantation 39% of recurrences were from nonmelanoma skin cancers. The
bulk of evidence suggests that immunosuppressive therapy facilitates the growth
of residual cancers. With some exceptions a minimum waiting period of 2 years
between treatment of a neoplasm, with a favorable prognosis, and undertaking
renal transplantation is desirable. A waiting period of approximately 5 years is
desirable for lymphomas, most carcinomas of the breast, prostate or colon, or for
large (> 5 cm) symptomatic renal carcinomas. No waiting period is necessary for
incidentally discovered renal carcinomas, in situ carcinomas, and possibly tiny
focal neoplasms. As it is highly unlikely that most candidates for nonrenal
transplantation can be kept alive for a two year waiting period nonrenal
transplantation can be undertaken in patients who have been treated for major
cancers, provided that the disease appears to have been adequately controlled,
and that the stage of the malignancy does not have a poor prognosis.

PMID: 9869873  [PubMed - indexed for MEDLINE]



 Transplantation. 2013 Aug 15;96(3):297-305. doi: 10.1097/TP.0b013e31829854b7.


Overall and cause-specific mortality in transplant recipients with a pretransplantation cancer history.


Brattström C(1), Granath F, Edgren G, Smedby KE, Wilczek HE.

Author information:
(1)Division of Transplantation Surgery, Department of Clinical Science,
Intervention and Technology, Karolinska Institutet, Karolinska University
Hospital, Stockholm, Sweden.

BACKGROUND: It is unclear to what extent cancer history affects
posttransplantation mortality in solid organ transplant recipients.
METHODS: We identified a Swedish population-based cohort of solid organ
transplant recipients in the National Patient Register 1970 to 2008 and linked it
to the Cancer and Cause-of-Death Register. Overall and cause-specific mortality
was estimated using Cox regression.
RESULTS: Of 10,448 eligible recipients, 416 (4%) had a prior malignancy unrelated
to the indication for transplantation diagnosed 2 months or more before surgery
(median, 5.7 years). Mortality among cancer history recipients was 30% increased
after transplantation, compared with other recipients (adjusted hazard ratio
[HR], 1.3; 95% confidence interval [CI], 1.1-1.5; P<0 .001="" br="" by="" driven="">cancer-specific death with no increase in cardiovascular, infectious, or other
noncancer mortality. An increased rate of death due to cancer history was
primarily observed among nonkidney recipients (adjusted HR(nonkidney), 1.8; 95%
CI, 1.3-2.5; HR(kidney), 1.2; 95% CI, 1.0-1.4). Rates were greatest for patients
with waiting times of 5 years or less but persisted with waiting times more than
10 years among kidney and nonkidney recipients with prior aggressive cancer types
(gastrointestinal, breast, kidney/urothelial, and hematologic malignancies).
CONCLUSION: We conclude that organ transplant recipients with cancer history are
at a moderately increased rate of death after transplantation, driven primarily
by death due to cancer recurrence.

PMID: 23759880  [PubMed - indexed for MEDLINE]



Israel Penn International Transplant Tumor Registry