Member Info for jonneo

Morning PCS . It's all a bit vague from stephen parker, like when he said the first , failed tox study had been 'initiated'instead of 'started ' . The CC should have had at least a clearer timeline for tox study dosing period end date . He must have known we'd be frustrated by this unexplained extension and could have explained it by telling us the facts. Obfuscation instead of transparency !

Why could a 16 week toxicology study take longer than 16 weeks to dose ?

A 16-week toxicology study measures the effects of repeated drug exposure over a strict 16-week active treatment window, but the total duration of the study—from animal arrival to final data collection—takes significantly longer due to pre-dosing preparation, procedural gaps, and post-dosing observation phases.

Charles River Laboratories

+4

The primary reasons the full study timeline extends past 16 weeks include the following operational and scientific factors:

Pre-Dosing Phase

Acclimatisation: Animals must adapt to the laboratory environment for 1 to 2 weeks before receiving any drug.

Baseline Screening: Technicians must collect pre-study blood samples, body weights, and health metrics to ensure all animals are healthy.

Randomisation: Researchers require time to systematically group animals to ensure statistically balanced treatment cohorts.

WuXi AppTec Lab Testing Division

Dosing Schedule and Staggering

Staggered Starts: Large animal cohorts are rarely dosed all on the exact same calendar day to keep workload manageable for lab staff. Dosing is often staggered over several days or a week, extending the calendar timeline.

Formulation Challenges: Sudden stability issues, preparation delays, or analytical validation failures of the test compound can temporarily pause the daily schedule.

Post-Dosing and Recovery Phases

Recovery Period: Many protocols include a "dose-free" recovery group. This group is monitored for an additional 2 to 12 weeks after the 16-week dosing period ends to see if toxicities reverse or if delayed side effects appear.

ScienceDirect.com

+2

Staggered Necropsy: Sacrificing the animals and harvesting organs (necropsy) takes days or weeks to complete properly, stretching out the time after the final dose is given.

Hi Potnak. If it is , it could be something for Chairman's Corner to feature . Something new to hinge the monthly update with .

Hopefully ! Just checked and receptor AI are in the partnering area as well.

Is it asking too much to get guest appearances from someone at receptor AI on our platform with Tim ? I'm hoping Stephen Parker has orchestrated a roadshow of sorts ! Maybe our american agency flying the flag for a partner for sra 737

I now see that it was accepted on 27th may .

Hi HBD. how is 27th May significant ? I can find no reference to that date.

Hi Lazarus. Are you suggesting that the board could have steered the publication of the peer review to coincide with our trip and presence in San Diego ? I.e asked for it's release now rather than say , 2 weeks ago if it was ready then ? If they could legally request that delay then they've played a blinder ! Let's hope the stars align more favourably for us from now on in .

Based on previous chairman's corner dates , we're due one in the next few days , maybe as early as tomorrow . if it confirmed the end date of toxicology study it could be a boost to the sp going into the long weekend. One can only hope so..

That's quite subtle katstrangler .

Any reason why i can't get a live quote to purchase on ii ? Over 10 minutes now

If tox study dosing started on 17/2 we've already gone an extra week past the previous study before it was stopped . In this case , hopefully no news is good news !

That alone is enough reason there should be no bonuses this year for any of them !

How do you know it's a sell ?

Hi Stevej.John reader stated at the AGM (9/12/25) that the 5 day pharmacokinetic study started that day , so should have finished 5 to 7 days later dependent on weekend activity.

Hi Potnak . It wouldn't surprise me to hear that the Sareum board don't know how to do what you've just done ! you should email this to Stephen Parker . Nothing wrong with shoving him toward Jacobi's door !

Good morning Cobalt . That's not strictly true though , as the rns states this;

'A preliminary assessment of the available data indicates that the findings observed during the study were disproportionately present in control-group animals which were not treated with SDC-1801, and based on the information available, are therefore considered highly unlikely to be related to SDC-1801. Sareum is reviewing the study data with the contractor and expert consultants to determine the cause of the findings and the appropriate next steps.'

I read that as suggesting that there was a greater problem with the control group but still affected the group getting 1801 though to a lesser extent.

We definitely need clarity here and fast !!

Damion , I presume these animals are monitored daily for toxicological biomarkers . To have pulled the plug at such a late stage suggests to me that there was no problem until that late stage ? maybe the vehicle batch or the equipment (Refrigeration storage ?) went faulty and caused the problem .

Morning PCS1954

In the absence of any definite date for commencement of dosing I think I can narrow it down somewhat .

RNS 29/5 mentioned initiation of Toxicology study ( suitably vague ), then after trying to communicate with Stephen Parker via email on several occasions , unsuccessfully , he eventually ' found ' the IR@sareum email posts and sent me a reply . In this he stated that ;

Dear John,

I have only just accessed the IR folder and have come across your emails. I imagine that the announcement of the commentcement of the tox study has answered your question?!

Thank you for youe support.

Best regards,

Stephen

i received this response on 14/6 , where' initiation' has now changed to ' commencement' . So it really started sometime between 29th may and 14th June . Can we assume this is a 24/7 operation ? I would think so . Therefore ,if you take 14th June at the latest . That's my thinking .

There's something about the wording in the RNS that gives me a glimmer of hope .

'Dr Stephen Parker, Executive Chairman of Sareum, said: "While the need to terminate this study is frustrating, the preliminary data strongly suggest that the findings are unlikely to be associated with SDC-1801. Dosing has been terminated out of concern for animal welfare, and we are working closely with our partners and experts to understand the cause and identify a new provider with the aim of restarting the study as quickly as possible with our existing cash resources."

It's the phrase 'restarting the study '. Restarting could mean starting again after interruption from where you left off ?

Also this ;

'The Company is also in discussions with alternative providers with the aim of restarting the study as soon as possible. Despite this set back, the Company anticipates being able to complete the full toxicology study, as originally scoped, with its existing cash resources.'

'complete the full toxicology study', does this mean finish it from a certain point to completion . Any thoughts or am I clutching at straws ? Would be nice to know we could pick up half way through !