Beyond Genome Cutting: Mastering Nature's Precision Repair

At Kamau Therapeutics, our capabilities are rooted in advanced process engineering and deep expertise in homology-directed repair (HDR)—nature’s own pathway for accurately mending DNA breaks using a homologous template. By optimizing cellular conditions, delivery vectors, and repair dynamics, we elevate first-generation CRISPR-Cas9 from mere DNA cutting to true precision engineering, achieving high-efficiency targeted integration in hematopoietic stem cells (HSCs) for durable therapeutic outcomes. Our next-generation platform enables transformative gene editing: precisely correcting disease-causing mutations, fully replacing faulty genes with functional versions, or inserting therapeutic genes into precise genomic harbors. This HDR-driven approach not only provides the essential repair template but empowers kilobase-scale sequence edits, advancing genome editing toward reliable, large-scale precision medicine.

Kamau’s lead program in sickle cell disease is first-in-class as a one-and-done cure

Our lead product candidate represents a fundamentally differentiated therapeutic strategy, designed to directly correct the underlying beta-globin gene mutation in hematopoietic stem cells (HSCs) of patients with sickle cell disease (SCD), thereby restoring normal adult hemoglobin (HbA) expression and offering a corrective true cure. Unlike alternative approaches that merely boost fetal hemoglobin (HbF) levels, true gene correction addresses the root cause of SCD by diminishing sickle hemoglobin (HbS) production because of true gene correction, avoiding the persistent risks associated with incomplete disease modification. In SCD, a single point mutation in the beta-globin gene of HSCs leads to the production of HbS in mature red blood cells (RBCs) instead of functional HbA. This disrupts normal hemoglobin interactions, causing HbS proteins to polymerize into insoluble chains that deform RBCs into rigid, sickle-shaped structures. These dysfunctional cells impair oxygen transport, obstruct blood flow, and trigger severe symptoms including chronic pain, hemolytic anemia, and organ damage. While HbF-boosting therapies can mitigate most vaso-occlusive events by inhibiting HbS polymerization, they fall short of full disease resolution. The presence of HbS, even with protective factors like elevated HbF, does not eliminate long-term clinical risks. By contrast, Kamau’s precision editing platform aims to convert HbS to HbA at high efficiency, potentially eradicating these complications and delivering superior and durable outcomes for patients.

The Solution

Kamau’s HDR technology harnesses the cell’s own repair system, prompting stem cells to repair disease-causing genetic mutations themselves. By directly correcting the sicklecausing mutation within HSCs, daughter RBCs also carry the corrected DNA sequence. This restores the normal balance of alpha-globin and beta-globin expression, resulting in normal, oxygen-carrying RBCs.

Scientific Advantage

Flexible

The unique ability to modify genetic material from 1bp up to 4000bp gives our technology the ability to precisely repair, replace, or insert genes.

Efficient

Increase in the desired gene from 10% to 30-50% across a wide range of gene targets and a variety of DNA templates has been achieved.

Durable

One dose provides a life-long cure.