Here are the key gainers and losers among ASX small caps at 12pm AEDT Monday:

In the green

Imugene (ASX:IMU) today told the market its vaccine was ready for development of a new mimotope vaccine to target the billion-dollar blockbuster” anti-PD-1 immuno-oncology market.

Shares in the company jumped 30 per cent on the news, to 2.2c — making it the biggest gainer in Monday morning trade.

IMU said the results transformed the company into a multi-asset biopharmaceutical company — complementing its gastric cancer vaccine HER-Vaxx.

All it took was a little sparkle for Poz Minerals (ASX:POZ), which surged after a video from its Blina Diamond Project was released to market.

The stock was up 24 per cent at 7.6c.

Berkut Minerals (ASX:BMT) was trading up 23 per cent at 18.5c off high grade nickel-cobalt estimates in Sweden.

The company told shareholders initial results demonstrated high potential for cobalt mineralisation across all of its projects in Scandinavia.

“The updated Mineral Resource at the Lainejaur Project has yielded a significant grade increase for both Ni and CO with a material increase in contained metal,” managing director Neil Inwood said.

Vanadium miner Protean Energy (ASX:POW) was up 21 per cent to 3.9c on no news — but following increasing interest in the alternative battery metal.

Philippines-focused payments platform Peppermint Innovation (ASX:PIL) rounded out the top 5 with a 19 per cent spike to 2.5c on no news.

In the red

Jayex Healthcare (ASX:JHL) lost ground on Monday morning after surging last week, trading down 25 per cent to 1.8c.

The e-Health company was the best performing on Friday morning, surging up 37 per cent.

Zinc play Brockman Mining (ASX:BCK) took a tumble down 23 per cent to trade at 1.6c.

The company had no news in the market.

Predictive Discovery (ASX:PDI) was down 18 per cent at 3.5c.

There was no news in the market, but the company recently presented at the Indaba Mining conference in Cape Town – showcasing itself as a gold-focused prospect generator in West Africa.

A lack of growth looks to the cause of Mitula Group’s (ASX:MUA) 13 per cent decline to 47.5c this morning.

The South-East Asian digital classifieds group reported expectations of 20 per cent revenue growth for the upcoming year, but said its guidance was approxiamtely 1 per cent below the range communicated to the market in 2017.

Marquee Resources (ASX:MQR) was down 12 per cent to 36c on no news.