Prasad Iyer
Singapore

In the harbor of Bari on the night of December 2, 1943, the German Luftwaffe punctured the Italian coastline with fire and hit the SS John Harvey, a ship secretly carrying two thousand mustard gas bombs. A toxic soup of fuel oil and chemical agents blanketed the water and clung to the skin of every sailor who swam for his life in the Adriatic.

Survivors pulled from the oily waters were initially treated for standard exposure and blast injuries. But then came the paradox. Men who seemed to be recovering began to die of something invisible. Their white blood cell counts simply vanished. Their lymph nodes, the sturdy, palpable structures that usually swell in defense, simply dissolved. By the time they reached the autopsy table, there was nothing left to find. Their immune systems had been hollowed out from the inside.

Colonel Stewart Alexander was the medical officer investigating the disaster. He was a cardiologist by training. Yet, in a brilliant moment of clarity, he realized that if this exposure could so ruthlessly decimate the immune system’s cellular defenses, it might be the very magic bullet needed to treat lymphomas and leukemias.

The soldiers had been exposed to sulfur mustard. Alexander’s investigation paved the way for the use of its less volatile cousin, nitrogen mustard, to reach directly into the double helix and fuse the DNA strands into a rusted, immovable knot. Once the strands are fused, they can never again unzip for replication.

The first patient, known in the records as J.D., was dying of lymphosarcoma in a Yale hospital bed in 1942. His face was so distorted by tumors that he could no longer speak. After a few injections of the nitrogen mustard derivative, the tumors did not just shrink—they evaporated. It was the first time a chemical derivative of war had ever beaten back a solid malignancy.

There is a profound, almost uncomfortable irony in the transition from the acrid, garlic-scented fog of a burning harbor to the quiet, sterile hum of a chemotherapy infusion pump. Yet every time I stand at the bedside of a child and hang a bag of cyclophosphamide, I am, in a way, standing in the wreckage of the SS John Harvey. If you trace the molecular lineage of that clear liquid, it leads directly back to a military disaster that was classified for decades. It is a sobering history that reminds us that in oncology, we often find our greatest tools in the most violent of places. We owe the chance we give these children to a cardiologist’s refusal to look away in a war zone, and to the effective violence of a molecule that was never meant to heal.

References

1. Alexander, S.F. (1947). “Medical Report of the Bari Harbor Mustard Gas Disaster.” Military Surgeon, 101, 417–421.
2. Gilman, A., & Philips, F.S. (1946). “The Biological Actions and Therapeutic Applications of the B-Chloroethyl Amines and Sulfides.” Science, 103(2675), 409–415.
3. Reminick, H. (2020). The Great Secret: The Classified World War II Disaster that Launched the War on Cancer. HarperCollins.