after approval there will be no immediate production shortage for first DCVX L needs to be good old fashioned sold as all innovative new drugs have to. Its not as if all countries/insurances companies 4 weeks after approval will have the reimburseument in place it will take quite some time, so there will be no immediate haste to step up production or production challange as Senti suggests ..
For the UK the production is more than sufficient as it is now
But I expect this to be Mercks problem after they bought NWBO and Advent