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Down 47% Since March: Is CRISPR Therapeutics Stock a Buy on the Dip?

On November 21, shares of CRISPR therapies (NASDAQ: CRSP) fell by 47% from the peak they reached in March. This may be a bit surprising to people who have followed this developer of gene therapies. After all, it was less than a year ago that regulators in the US and EU approved their first therapy, Casgevy, to treat two blood-related conditions.

Casgevy’s initial launch wasn’t as exciting as that of investors and its partner. Vertex Pharmaceutica (NASDAQ: VRTX)had hoped. However, less than a year after its launch, it is still too early to turn our backs on this innovative drug manufacturer. In addition to Casgevy, it has five other therapy candidates that are in the clinical phase.

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To see if it makes sense to add some stocks to your portfolio, let’s take a look at why the stock has been in trouble and what could lift it back up.

The Food and Drug Administration (FDA) approved Casgevy last December for the treatment of sickle cell disease (SCD). In January, the agency followed approval for the treatment of transfusion-dependent beta-thalassemia (TDT).

On the other side of the Atlantic, European regulators approved the treatment of both SCD and TDT in February. Despite regulatory approvals, the launch is slower than investors expected.

CRISPR Therapeutics wisely partnered with Vertex Pharmaceuticals to develop and commercialize Casgevy, but Vertex has struggled to get it off the ground. Despite receiving approval in late 2023, Vertex didn’t make its first sale of Casgevy until the third quarter.

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Sales have been slow because it is a complicated therapy made in individual batches from a patient’s stem cells. Once reinfused, the CRISPR-modified stem cells should produce functioning hemoglobin so that SCD and TDT patients no longer require regular blood transfusions. Unfortunately, reinfused Casgevy cells cannot gain a foothold unless patients first deplete their immune systems with a dangerous conditioning regimen.

Recently, a patient with SCD died during a gene therapy trial Beam therapies. Doctors who conducted the investigation did not blame Beam’s candidate for the volunteer’s death; they blamed a conditioning regimen that contained busulfan. Busulfan is also used to condition patients for Casgevy.

A lack of treatment options could work in Casgevy’s favor. Last year, the European Medicines Agency withdrew conditional approval for an SCD drug Novartis called Adakveo, after it failed to outperform a placebo in a confirmatory study. And in September, Pfizer has withdrawn Oxbryta, a daily tablet approved for the treatment of SCD patients, from the market after failing a post-marketing study.

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