Sirtex shares soar after it unveils $90m writedown

Sirtex shares soar after it unveils $90m writedown

Sirtex Medical has taken a $90 million hit on the value of its clinical and research and development assets and will cut its workforce by 15 per cent as the medical device developer moves to reset its core business for expansion. The company (SRX), whose core technology is a selective internal radiation therapy, also says its business has been performing within guidance, with dose sales growing by about 5.5 per cent in fiscal 2017.


In May, shares in Sirtex plunged almost 30 per cent after a trial of its liver cancer treatment proved disappointing, and in January the then chief executive Gilman Wong was fired for alleged insider trading.

After a follow-up analysis, the company found that its SIR-Spheres treatment combined with chemotherapy was significantly better than chemotherapy alone in a certain group of metastatic colorectal cancer (mCRC) patients.

Specifically, right-sided tumour sufferers (see image below) experienced a significant improvement in their outcomes when SIR-Spheres were added to their treatment regimen. It is hypothesised that SIR-Spheres are more effective because these patients traditionally have a poorer prognosis and inferior responses to treatment.

Unfortunately the SIR-Spheres were pretty much useless in left-sided tumour sufferers, but a future case might be made for including SIR-Spheres as standard treatment regime for right-sided tumours (which, ultimately, could result in a larger target market). From lemons, a few drops of lemonade:

Treatment with… chemotherapy plus SIRT… in mCRC patients with primary tumours originating in the right colon results in a statistically significant and clinically meaningful improvement in overall survival compared with chemotherapy alone.

Unfortunately, and this is one of the most frustrating parts of scientific research:

“The drivers of the observed side-based differences in treatment impact remain to be elucidated.

Which is scientist-speak for ‘we’re not really sure why we got this result.’ In my view the results are a positive but unlikely to be important to the company’s sales and prospects in the near term. Rather, they suggest that Sirtex can potentially still expand into other treatment opportunities over the medium term.

In the near term, the new CEO’s strategies to cut costs and focus on growing sales will be far more important. While I’m optimistic about the new strategy, I’ll be waiting for evidence before making an investment decision either way on Sirtex.

Article Source – The Australian