CONGRESS NEWS

Highlights in breast cancer

ASCO 2021 featured one crucial, practice-changing trial in early breast cancer: the OlympiA trial showed that one year of adjuvant olaparib improves invasive disease-free survival by 8.8% compared to placebo, when administered to high risk early breast patients (triple negative or hormone sensitive and HER2 negative) with a germline BRCA1 or 2 mutation. Furthermore, ECOG-ACRIN EA1131 failed to show improved outcome in triple negative breast cancer treated without pathological complete response after neoadjuvant chemo-therapy with platinum based chemotherapy compared to the current standard capecitabine. GeparNUEVO for the first time showed long term outcome with anti-PD(L)1 therapy administered with neoadjuvant chemotherapy in triple negative breast cancer. In the advanced setting, interesting overall survival updates of the PALOMA-3 and MONALEESA-3 studies were presented. Furthermore, the SYsucc-002 trial demonstrated that trastuzumab plus endocrine therapy was non-inferior to and had fewer toxicities compared with trastuzumab plus chemotherapy in patients with HR+/HER2- metastatic breast cancer. In addition, this article will touch upon several other studies that are notable.

(BELG J MED ONCOL 2021;15(5):208-17)

Highlights in immunotherapy

Over the last decade immunotherapy has become an integral part of the oncogenic treatment arsenal. Meanwhile, the field of immune-oncology continues to evolve, which was amply illustrated by the large number of studies evaluating innovative immunotherapies presented at ASCO 2021.

(BELG J MED ONCOL 2021;15(5):218-23)

Highlights in head and neck cancer

The ASCO Annual Meeting was held from 4 till 8 June 2021 in a virtual format. During this meeting, immunotherapy arrived in first-line recurrent/metastatic nasopharyngeal carcinoma, adjuvant capecitabine enters prudently the treatment algorithm of nasopharyngeal cancer, results of de-escalation studies in HPV-positive oropharyngeal cancer are promising and forwarding to phase III studies, cabozantinib shows impressive results in later-line radioiodine-refractory differentiated thyroid cancer, and immunotherapy tries to find a place in recurrent/metastatic salivary gland tumours, a tumour type without a uniform standard of care anno 2021. In this report, the most important headlines will be discussed, with comments on the clinical relevance of the different studies.

(BELG J MED ONCOL 2021;15(5):226-33)

Highlights in respiratory oncology

At ASCO 2021 much of the attention in the field of lung cancer went to early-stage non-small cell lung cancer (NSCLC) discussing both (neo)adjuvant strategies and local treatment modalities. In metastatic NSCLC, we would like to highlight some recent (chemo)immunotherapeutic advances in the treatment of non-oncogene addicted tumours as well as promising strategies to overcome osimertinib resistance, targeting of KRAS G12C mutated tumours and updated results for EGFR exon 20, HER2 exon 20, MET and RET targeting. As a final abstract, the results of the randomised phase III CALGB 30610/RTOG 0538 trial evaluating high-dose thoracic radiotherapy in small cell lung cancer will be summarised. We would like to acknowledge Prof. Veerle Surmont (University Hospital Ghent) for her help in selecting the abstracts discussed in this overview.

Highlights in gastro-intestinal cancers

At ASCO 2021, the most important studies in gastro-intestinal (GI) cancer related to the use of immuno-therapy in cancers of the upper gastro-intestinal tract. For advanced oesophageal squamous cell carcinoma (ESCC), the CheckMate 648 trial demonstrated that both nivolumab plus chemotherapy and nivolumab plus ipilimumab represent a new potential first-line standard of care, especially for patients with a tumour PD-L1 expression of at least 1%. For adenocarcinoma of the oesophagus and oesophago-gastric junction, there is no evidence that peri-operative chemotherapy is unacceptably inferior to multimodal therapy. For tumours of the lower gastro-intestinal tract, the most important results came from the DESTINY-CRC01, CHRONOS, FIRE-4.5 and PANAMA studies.

(BELG J MED ONCOL 2021;15(5):248-53)

Highlights in genitourinary cancers

The 2021 ASCO Annual Meeting offered a variety of advancements in the treatment and detection of genitourinary cancers. For prostate cancer (PCa), matched tumour-normal tissue sequencing was shown to be the ideal standard of care (SOC) in de novo high-risk PCa patients. The addition of immune checkpoint inhibitors (ICI) to the SOC was found to be highly effective in muscle-invasive bladder cancer, with enfor-tumab vedotin (EV) continuing to show efficacy in urothelial carcinoma in a post-ICI advanced/ metastatic setting. Finally, the combination of ICI and tyrosine kinase inhibitors (TKIs) as first-line therapy for both non-clear cell and clear cell renal cell carcinoma (non-cc/ccRCC) displays a clear survival benefit, with this efficacy extending into the second-line treatment of patients with metastatic non-ccRCC who have previously received ICIs. The most important headline presentations relating to genitourinary cancers will be discussed in this congress highlights article.

(BELG J MED ONCOL 2021;15(5):256-63)

Highlights of the 23rd annual meeting of the Belgian Society of Medical Oncology (BSMO)

SUMMARY

As always, the annual meeting of the Belgian Society of Medical Oncology (BSMO) wanted to provide a platform for the dissemination of practice-changing information relevant to Oncology within Belgium. In light of the ongoing global pandemic, the 23^rd annual meeting went virtual in 2021. This did not detract from the engaging line up of presentations, with a particular emphasis on treatment breakthroughs in a variety of cancers. In addition to this, several projects with a local impact on the Belgian Oncology landscape were presented. Get up to date with the 2021 BSMO 23^rd annual meeting with these highlights.

BELG J MED ONCOL 2021;15(3):134-44