Sci-fi writer Ben Bova's B-Four Prods. has joined forces with Red Giant Media for an adaptation of Bova's own script The Immortality Factor.

According to Variety, Red Giant principal and The Negotiator writer Kevin Fox will write the screenplay, with Fox, Isen Robbins and Aimee Schoof producing for Red Giant and Grant Turck producing for B-Four.

The Immortality Factor follows two brothers, one a scientist and one a medical doctor, divided over stem-cell research but united by the need to save the life of a woman they both love.

The book, published by Tor in April, is the uncut version of Bova's 1996 thriller "Brothers."

No production date has been set.

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