Ul­tragenyx wins a block­buster OK for its lead­ing rare dis­ease drug buro­sum­ab -- priced at $200,000

Ul­tragenyx $RARE has won the big FDA ap­proval they were look­ing for.

The biotech — al­lied with Ky­owa Hakko Kirin — re­port­ed Tues­day af­ter­noon that the agency came through on buro­sum­ab, an in­her­it­ed form of rick­ets. This is its sec­ond OK and the one that the com­pa­ny be­lieves will put them on the map for com­mer­cial­iza­tion work.

This drug is cen­tral to Ul­tragenyx’s nar­ra­tive. The biotech re­cent­ly scored an ap­proval for Mep­se­vii, a drug that treats rare cas­es of mu­copolysac­cha­ri­do­sis type VII . But it’s the buro­sum­ab launch that has every­one’s at­ten­tion on Wall Street. The biotech has been set­ting up a small, 30-per­son sales force as it be­gins to han­dle what Ul­tragenyx ex­ecs hope will be a sub­stan­tial port­fo­lio of rare dis­ease drugs.  And buro­sum­ab has peak sales fig­ures of $1 bil­lion tied to it.

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