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Paterna Creates Embryos Using Lab-Grown Sperm, Costs $5-12K

4/25/2026

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Summary

Story summary

Paterna Biosciences grew sperm from testicular stem cells and fertilized eggs, creating embryos.
The company says the method could give men with no sperm a path to father children.
Larry Lipshultz called work huge if validated, noting researchers have struggled to identify growth factors.
Paterna will compare embryos made with sperm to those made with natural sperm and estimates the cost will be $5,000 to $12,000, raising affordability concerns.

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Story summary

Paterna Biosciences grew sperm from testicular stem cells and fertilized eggs, creating embryos.
The company says the method could give men with no sperm a path to father children.
Larry Lipshultz called work huge if validated, noting researchers have struggled to identify growth factors.
Paterna will compare embryos made with sperm to those made with natural sperm and estimates the cost will be $5,000 to $12,000, raising affordability concerns.