Comparison of superb microvascular imaging (SMI) quantified with ImageJ to quantified contrast-enhanced ultrasound (qCEUS) in liver metastases-a pilot study

BACKGROUND

The aim of the study was to compare methods for the assessment of vascularisation of liver metastases (LM) between superb microvascular imaging (SMI), contrast-enhanced ultrasound, and microvascular density (MVD).

METHODS

SMI results were quantified as the vascularisation quotient (VQ), based on a grey-scale analysis with ImageJ image software. Those results were compared to contrast-enhanced ultrasonography (CEUS) values, calculated with VueBox^®. MVD was measured with an anti-CD34 antibody.

RESULTS

This study included 13 patients with LM. The VQ showed a strong correlation with the quantified parameters of contrast-enhanced ultrasound. The parameters of quantified contrast-enhanced ultrasound compared with quantified SMI showed the following statistical correlations: peak enhancement (PE), in arbitrary unit (a.u.) (r=0.72104, P=0.0054), PE in Decibel (dB) (r=0.65918, P=0.00141), Wash-in- Area Under the Curve (WiAUC) in a.u. (r=0.63604, P=0.00194), Wash-in Perfusion-Index (WiPI) in a.u. (r=0.73337, P=0.0043), Wash-in Perfusion-Index (WiPI) in dB (r=0.65642, P=0.0194), Wash-in-Rate (WiR) in a.u. (r=0.7304, P=0.0036) and Wash-in-Rate (WiR) in dB (r=0.82897, P=0.0005).

CONCLUSIONS

Comparison of the two methods, SMI and contrast-enhanced ultrasound (CEUS), for quantitative assessment of vascularisation of LM showed good correlation. The contrast-independent Doppler technique SMI can qualitatively assess the vascularisation of LM.

Pancreatic Cancer: Current Multimodality Treatment Options and the Future Impact of Molecular Biological Profiling

Background

Pancreatic cancer (PDAC) - even if deemed resectable - has still a dismal prognosis and is the seventh leading cause of global cancer-related death with rising incidence worldwide.

Summary

Surgical resection at best in combination with adjuvant systemic chemotherapy is the only potentially curative treatment. Surgical treatment has substantially improved over the last years with significantly reduced perioperative morbidity and mortality. Even when deemed radiologically resectable, the majority of PDAC is likely to have micrometastases, leaving most PDAC patients with an advanced stage. Recent 5-year overall survival was up to 46% in patients eligible for surgery with intensified adjuvant chemotherapy. Eligible for curative surgery are about one-third of the patients, and only 20% of these patients have the option for cure with surgery and adjuvant chemotherapy. Standards of care in treating PDAC patients include various mostly combinational chemotherapy approaches in the advanced and adjuvant setting. Moreover, first targeted therapies for individualizing treatment, e.g., specific subgroups like BRCA1/2 germline mutated patients, were established lately. Neoadjuvant concepts are currently part of research. This review focuses on current and future multimodal treatment options of PDAC and the impact of molecular profiling for individualizing treatment.

Key Messages

State of the art in pancreatic cancer therapy is multimodal and includes novel strategies to allow molecular defined subgroup-specific treatment.

A comparison of spleen size measured by ultrasound in a random population sample and a matched sample of patients at a university hospital, and the determination of normal values and influencing factors

OBJECTIVES

 This study aimed to compare spleen sizes in a hospital and a population sample using ultrasound and define normal values and factors influencing spleen size.

METHODS

 Both samples' spleen sizes (n = 1520) were measured using ultrasound under the same conditions. Blood counts and other laboratory parameters were determined under the same conditions in both samples.

RESULTS

 In the hospital sample (n = 760), the mean spleen size was 114.7 mm, and in the population sample (n = 760), it was 99.1 mm. In both, spleen size in men was significantly higher than in women (p < 0.0001) and influenced by body height, weight, and BMI (body mass index) (p < 0.0001). In the hospital sample, there was a correlation with higher values for ALT (p = 0.0160), AST (p = 0.0394), AP (p = 0.0482), and ferritin (p = 0.0008) and lower values for HDL (p = 0.0091) and thrombocytes (p < 0.0001). In the multivariate analysis, higher values for AP (p = 0.0059) and lower values for hemoglobin (p = 0.0014) and thrombocytes (p = 0.0001) were found. Stratified for sex (men, women), spleen size increased with higher values for ALT (p = 0.0116, p = 0.0113), AST (p = 0.0014, p = 0.0113), and AP (p = 0.0001, p = 0.0012), and with lower values of hemoglobin (p = 0.0057, p = 0.0016), thrombocytes (p < 0.0001, p = 0.0003), and albumin (p = 0.0029, p = 0.0432). In women, there was a discordant correlation with red blood cells (p = 0.0005) and a concordant correlation with GGT (p = 0.0241), and in men discordant correlations with cholesterol (p = 0.0010) and HDL (p = 0.0404).

CONCLUSIONS

 The already proven impact of anthropometric data on spleen size was confirmed. The role of laboratory values should be further analyzed.

Nintedanib plus mFOLFOX6 as second-line treatment of metastatic, chemorefractory colorectal cancer: The randomised, placebo-controlled, phase II TRICC-C study (AIO-KRK-0111)

Nintedanib is a triple angiokinase inhibitor of vascular endothelial growth factor receptor 1-3, fibroblast growth factor receptor 1-3 and platelet-derived growth factor receptor-a/-b. Thereby, it targets angiogenic escape mechanisms. The trial TyRosine kinase Inhibitor for the treatment of Chemorefractory Colorectal Cancer (TRICC-C) trial evaluates the addition of nintedanib to mFOLFOX6 (fluorouracil, folinic acid and oxaliplatin) in patients with metastatic colorectal cancer (mCRC). TRICC-C is a randomised controlled, double-blinded, phase II trial in mCRC patients that received a first-line non-oxaliplatin containing chemotherapy. Patients received mFOLFOX6 + nintedanib (F + N) (2 × 200 mg p.o./d, d1-d14) or mFOLFOX6 + placebo (F + P), in a 1:1 ratio. Primary endpoint was median progression free survival (mPFS) and secondary overall response rate (ORR), overall survival (OS) and safety. Fifty-three patients (27 F + N; 26 F + P) were randomised between 12/2012 and 5/2016 (scheduled n = 180). The trial was terminated prematurely due to slow accrual. The trial did not reach its primary endpoint but mPFS, median overall survival (mOS) and disease control rate (DCR) were numerically higher in the F + N arm compared to the F + P arm; however, the difference was not significant (mPFS: F + P: 4.6 months vs F + N: 8.1 months; HR 0.65; 95% CI 0.32-1.30; P = .2156; mOS: F + P: 9.9 months vs F + N: 17.1 months; HR 1.03, 95% CI 0.48-2.23; P = .9387; DCR: F + P: 50% vs F + N: 66,7%; P = .2709). Toxicity was moderate and only different for neutropenia (F + P: 11.5%, F + N: 19.2%) and gastrointestinal disorders (F + P: 65.4%, F + N: 84.6%). Final results show safety and a nonsignificant trend towards improved PFS and DCR for the combination of mFOLFOX6 + nintedanib in the second-line therapy of mCRC.

Immunotherapy in Gastrointestinal Cancers

Background

Gastrointestinal malignancies have both a high incidence rate and a high mortality rate. Immuno-oncological treatment approaches are becoming increasingly established in the treatment of gastrointestinal cancers.

Summary

In this review, we give an overview of the types and effects of immunotherapies. We focus on recent studies on immunotherapies with special attention to immune checkpoint inhibition in carcinomas of the esophagus and stomach, the hepato-pancreatico-biliary system, and the colorectum including the anal channel in the metastatic setting, and we show their achievements but also their limitations. In an outlook, we discuss new approaches in immunotherapy like CAR T-cell therapy and oncolytic viruses.

Key Messages

Gastrointestinal cancers show overall moderate response rates to immunotherapy. Nevertheless, subgroups such as DNA mismatch repair-deficient or microsatellite-instable tumors particularly benefit from the immune checkpoint blockade. Further studies are ongoing.

DocOx (AIO-PK0106): a phase II trial of docetaxel and oxaliplatin as a second line systemic therapy in patients with advanced pancreatic ductal adenocarcinoma

Background

The current study was conducted to examine the activity of a docetaxel/oxaliplatin (DocOx) combination as second line treatment for advanced pancreatic ductal adenocarcinoma (Trial registration: NCT00690300. Registered June 2, 2008)

Methods

DocOx is a prospective, multi-center, single arm, phase II trial using docetaxel (75 mg/m², 60 min, d 1) and oxaliplatin (80 mg/m², 120 min, d 2) in 21-day cycles. The treatment period was scheduled for up to 8 cycles. Primary endpoint was tumor response according to RECIST 1.0. Secondary endpoints were progression free survival, overall survival, safety/toxicity, quality of life and clinical benefit.

Results

Data represent the intention to treat analysis of 44 patients with chemorefractory pancreatic cancer enrolled between 2008 and 2012 at five institutions in Germany. The primary endpoint of tumor response was achieved in 15.9 % of the patients (7 partial remissions, no complete remission), with a disease control rate of 48 % after the first two treatment cycles. Median progression free survival (PFS) was 1.82 months (CI 95 % 1.5–3.96 months) and median overall survival (OS) was 10.1 months (CI 95 % 5.1–14.1 months).

Conclusions

This single-arm trial demonstrates that the combination of docetaxel and oxaliplatin yields promising results for the treatment of advanced pancreatic ductal adenocarcinoma patients. Selected patients had particular benefit from this treatment as indicated by long PFS and OS times. Even after 8 cycles of treatment with DocOx a partial response was observed in 2 patients and stable disease was observed in another 6 patients. The data obtained with the DocOx protocol compare well with other second line protocols such as OFF (oxaliplatin, 5-FU, leucovorin). The DocOx regimen could be an interesting option for patients who received gemcitabine as first line treatment for metastatic pancreatic cancer.

Electronic supplementary material

The online version of this article (doi:10.1186/s12885-016-2052-4) contains supplementary material, which is available to authorized users.

Loss of ATM accelerates pancreatic cancer formation and epithelial-mesenchymal transition

Pancreatic ductal adenocarcinoma (PDAC) is associated with accumulation of particular oncogenic mutations and recent genetic sequencing studies have identified ataxia telangiectasia-mutated (ATM) mutations in PDAC cohorts. Here we report that conditional deletion of ATM in a mouse model of PDAC induces a greater number of proliferative precursor lesions coupled with a pronounced fibrotic reaction. ATM-targeted mice display altered TGFβ-superfamily signalling and enhanced epithelial-to-mesenchymal transition (EMT) coupled with shortened survival. Notably, our mouse model recapitulates many features of more aggressive human PDAC subtypes. Particularly, we report that low expression of ATM predicts EMT, a gene signature specific for Bmp4 signalling and poor prognosis in human PDAC. Our data suggest an intimate link between ATM expression and pancreatic cancer progression in mice and men.

[Epidemiology and risk factors of hepatocellular carcinoma]

BACKGROUND

The incidence of hepatocellular carcinoma (HCC) has increased over the past decades as a result of alcoholic liver disease, the metabolic syndrome and the increasing incidence of viral hepatitis B and C.

OBJECTIVES

An evaluation of the epidemiology of HCC, presentation and discussion of the risk factors for the development of HCC.

MATERIAL AND METHODS

This study was based on a literature review, analysis of the statistics of the World Health Organization (WHO), discussion of current basic research and expert recommendations.

RESULTS

The results show that HCC already represents the fifth most common malignancy in men and the ninth most common malignancy in women, and the incidence is still rising. The pronounced regional differences in prevalence and underlying risk factors are mainly, but not exclusively, due to the prevalence of chronic viral hepatitis B.

CONCLUSION

Hepatocellular carcinoma is a major medical problem. Primary prevention measures and suitable screening algorithms are gaining more and more importance.