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Gene test guides more personalised breast cancer treatment

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Many people with breast cancer can safely avoid chemotherapy with the use of a gene test, a large international clinical trial led by University College London (UCL) has found. 

The OPTIMA trial (Optimal Personalised Treatment of early breast cancer using Multi-parameter Analysis) followed more than 4,400 patients across the UK, Norway, Sweden, Australia, New Zealand and Thailand. 

The findings, presented at the 2026 American Society of Clinical Oncology (ASCO) meeting in Chicago, show that in people aged 40 and over with a low Prosigna score, only 2% will benefit from chemotherapy. 

Chemotherapy is regularly offered to people with early‑stage breast cancer that has spread from the breast to nearby lymph nodes, as it lowers the risk of the disease returning. While effective overall, there is concern among clinicians that many people with the most common, hormone‑sensitive type of breast cancer receive little or no benefit from chemotherapy but still experience its significant and sometimes dangerous side effects. 

OPTIMA used a genomic test from Veracyte called Prosigna, which measures the activity of genes involved in breast cancer growth. The test is performed on cancer tissue samples. Typically, these are tumours removed at surgery but as the test uses very little tissue, it also works on diagnostic needle biopsies. 

Chief Investigator of the OPTIMA trial and Professor of Breast Oncology at the UCL Cancer Institute, Professor Rob Stein said: “OPTIMA addresses a long-standing challenge in breast cancer care: identifying who truly benefits from chemotherapy and who does not. Our findings show that many patients can safely avoid chemotherapy without compromising their outcomes. These results mark an important and significant step toward more personalised treatment. The trial has successfully used tumour biology to guide decisions rather than relying solely on traditional clinical features.” 

Results of the OPTIMA trial 

The OPTIMA trial recruited women and men aged 40 or older following surgery for hormone-sensitive breast cancer. Most had their cancer spread to under arm lymph nodes which placed them at high risk of future recurrence. Because of this, their usual treatment included both a course of chemotherapy and standard hormone tablets taken for five to 10 years. 

Of the 4,429 people who took part in the trial, more than two-thirds (68%) had a low Prosigna score. For this group, the results showed that outcomes were very similar whether chemotherapy was given or not.  

Five years after treatment: 

  • 94.8% of those who received chemotherapy alongside hormone therapy were alive and free from breast cancer recurrence 
  • 93.6% of those treated with hormone therapy alone were also alive and recurrence-free 

The post Gene test guides more personalised breast cancer treatment appeared first on Drug Discovery World (DDW).

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New webinar: Tackling drug discovery challenges in cancer research

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Cancer cells

Hosted by Drug Discovery World and supported by Sartorius and BioIVT, this webinar will explore the opportunities and challenges that exist within cancer research drug discovery and development.

You will hear from Dr Sudha Rao, Chief Scientific Officer of Kazia Therapeutics, Karol Budzik, PhD, Business Development Associate at Vyriad Therapeutics and Lars van der Veen, Chief Scientific Officer at iOnctura.

Presentations will cover how cancer treatments have shifted towards reprogramming the biology driving tumour growth, immune escape and treatment resistance, the trajectory that in vivo CAR-T treatments are taking, and how challenging tumours burdened by stroma and immune-mediated resistance can be tackled.

Q&A with the speakers follows the presentations.

Register for free now.

The post New webinar: Tackling drug discovery challenges in cancer research appeared first on Drug Discovery World (DDW).

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Psilocybin proves promising in neuropathic pain mouse study

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Amid the rise of psychedelics in the mental health space, researchers have begun to explore psilocybin as a treatment for chemotherapy-induced peripheral neuropathy.

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New Spectrometry Technique Could Aid Formulation Development

New Spectrometry Technique Could Aid Formulation Development

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A new technique combining two forms of spectrometry could help biopharmaceutical companies improve their choice of formulation buffer for antibody manufacturing by revealing how molecular forms and three-dimensional shapes of complex biologics respond to their environment. That’s the view of Christian Bleiholder, PhD, a professor at Florida State University who helped develop the technique.

According to Bleiholder, what happens structurally when a complex biological molecule, such as an antibody or viral spike protein, binds to its target is currently poorly understood.

“This is where [this approach] can help with the bioprocessing and formulation,” he says, as structural changes “can affect the lifespan [of the product] and lead to issues, such as aggregation.”

Because antibodies are complex, existing techniques tend to be powerful at different levels of complexity, he explains. Mass spectrometry is particularly powerful for distinguishing molecular composition, while structural approaches such as X-ray crystallography and cryo-electron microscopy can provide high-resolution structural information.

The challenge is understanding the link between these things within a heterogeneous sample, he says.

To overcome this, Bleiholder and his team worked with Bruker Daltonics to develop Tandem-Trapped Ion Mobility Spectrometry (Tandem-TIMS). This combines tandem ion mobility spectrometry with tandem mass spectrometry to disentangle three overlapping layers of molecular complexity: molecular form, three-dimensional shape, and binding or assembly state, he says.

He explains that, if the proteins have different structures, they can be characterized with tandem ion mobility spectrometry, and then mass spectrometry can be used to look at their molecular forms and binding states.

Going forward, Bleiholder hopes the technique can be used for formulation development but also earlier, during drug discovery of new products, such as multi-specific antibodies, to determine which molecular states are important and how those change when a biologic engages its target. He also plans to look at automating the technique.

Bleiholder spoke about using Tandem-TIMS at the Bioprocessing Summit in Boston earlier this year.

The post New Spectrometry Technique Could Aid Formulation Development appeared first on GEN – Genetic Engineering and Biotechnology News.

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