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Pearl Toh, 30 Jan 2018
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26 Dec 2017
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Hoo Yee Yin, 05 Jun 2018
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Dual inhibition of EGFR, HER3 confers no survival benefit in metastatic colorectal cancer

10 Jun 2018

The dual-action antibody directed against epidermal growth factor receptor (EGFR) and human epidermal growth factor receptor 3 (HER3), duligotuzumab, does not appear to provide survival advantage compared with cetuximab in patients with RAS exon 2/3 wild-type metastatic colorectal cancer (mCRC) treated with the FOLFIRI (folinic acid, fluorouracil and irinotecan) regimen, according to the results of a phase II trial.

A total of 134 mCRC patients (median age 62 years; 61 percent male) with KRAS exon 2 wild-type were randomized to receive either duligotuzumab (n=68) or cetuximab (n=66) with FOLFIRI until progression or intolerable toxicity. Researchers performed mutation and biomarker analysis on mandatory tumour samples, as well as efficacy analysis in patients with RAS exon 2/3 wild-type tumours.

Of the patients, 98 had RAS exon 2/3 wild-type tumour, with 53 in the duligotuzumab arm and 45 in the cetuximab arm.

Efficacy data revealed that in the subgroup of patients with RAS wild-type tumours, duligotuzumab did not improve progression-free survival (median PFS, 7.3 vs 5.7 months; stratified hazard ratio [HR], 1.21; 90 percent CI, 0.81–1.81) or overall survival (median OS, 14.0 vs 13.1 months; stratified HR, 1.00; 0.61–1.66) compared with cetuximab. Moreover, a trend toward a lower objective response rate (ORR) was observed in the duligotuzumab arm (19 percent vs 33 percent; stratified HR, 0.47; 0.21–1.01).

There was no association observed between PFS or ORR and ERBB3, NRG1 or AREG expression. In terms of safety, duligotuzumab was associated with fewer skin rash events but more diarrhoea. Additionally, although the incidence of grade ≥3 adverse events (AEs) was similar between the two treatment arms, the frequency of serious AEs was higher with duligotuzumab.

Further development of duligotuzumab has been discontinued.

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Most Read Articles
Prof. Cheuk-Chun Szeto, Dr. Winston W. S. Fung, 25 Jan 2018
A 65-year-old lady with a background of type 2 diabetes, hyperlipidaemia and chronic immune thrombocytopenia presented to us with a 2-week history of generalized malaise and myalgia. Shortly after the onset of myalgia, she was noted to have reduced urine output and the urine was described as dark in colour. Her regular medications included prednisolone, danazol, simvastatin, metformin, and human insulin. Upon further questioning, the patient admitted that her compliance to simvastatin and danazol used to be poor. However, she recently started to take both medications regularly after repeated education.
Pearl Toh, 30 Jan 2018
Use of statins may not be neuroprotective, in contrast to findings from previous observational studies. On the contrary, fungus-derived or lipophilic statins appeared to be associated with a slightly increased risk of Alzheimer's disease (AD) compared with synthetic and hydrophilic statins, suggests a new study based on real-world clinical practice data.
26 Dec 2017
Supplementation with omega-3 fatty acids in combination with rosuvastatin may yield significant reductions in triglycerides and nonhigh-density lipoprotein (HDL) cholesterol as compared with rosuvastatin monotherapy, according to data from the ROMANTIC (rosuvastatin-omacor in residual hypertriglyceridemia) trial.
Hoo Yee Yin, 05 Jun 2018
Enteral nutrition (EN) is also known as tube feeding. It is nutrition provided through the gastrointestinal (GI) tract via a tube, catheter, or stoma that delivers nutrients distal to the oral cavity.