When Jacoba Ballard took a home DNA test, she hoped to find one or two donor-conceived siblings. Instead, the matches led to dozens of people who shared the same biological father: Donald Cline, the Indianapolis fertility doctor who had treated their mothers and secretly used his own sperm.
Fertility treatment requires an unusual degree of trust. Patients consent to a particular procedure, donor and set of medical risks while a doctor controls material they cannot independently verify. Donald Cline exploited that imbalance in the 1970s and 1980s, long before consumer DNA databases made genetic secrets difficult to contain.
The discovery did not begin inside a clinic or courtroom. It began when donor-conceived adults compared their results online and realised that the numbers, family names and geography did not fit the stories their parents had been told. We are following Jacoba Ballard's investigation from an unexpected group of half-siblings to a case that exposed a gap in Indiana law and helped change it.
What Happened in the Donald Cline Fertility Fraud Case?
Donald Cline operated a respected fertility practice in Indianapolis. Patients came to him after struggling to conceive, often at a time when donor insemination was less regulated and more secretive than it is today. Some couples were told that samples came from medical residents or other anonymous donors chosen to resemble the intended father. Others understood that the husband's own sperm would be used.
Cline instead used his own sperm to inseminate multiple patients without their knowledge or consent. The procedure might require repeated visits, meaning patients could be deceived several times before a pregnancy occurred. They consented to fertility treatment, but not to Cline becoming the biological father of their children.
Jacoba Ballard was born in 1980 after her mother received treatment at Cline's clinic. She learned as a child that she had been donor-conceived and grew curious about possible siblings and medical history. The family had understood that one donor would be used only a limited number of times, partly to reduce the risk of many closely related children growing up in the same area.
In 2014, Ballard submitted her DNA to 23andMe. Instead of finding one or two relatives, she matched with seven half-siblings. They began comparing paternal family trees and found a link to the maiden name of Cline's mother. The possibility that their parents' fertility doctor was also their biological father moved from a dark joke to the most plausible explanation.
The group contacted Cline, his adult relatives and public authorities. His responses shifted as more evidence appeared. He initially denied using his own sperm and suggested that the alleged number of children was impossible. DNA matches continued arriving, each one connecting another family to the same doctor.
Local television journalist Angela Ganote investigated after Ballard struggled to get action from officials. Her reporting found patients who had been promised anonymous donors and at least one family that believed the intended father's sperm had been used. For these mothers, the discovery rewrote the circumstances of conception decades after they had made intimate medical decisions.
Consumer DNA testing made the case possible because biological relationships cannot be managed like old paper files. Cline could destroy or withhold clinic records, but he could not prevent his genetic relatives from testing. A match to one of his acknowledged children or extended family members created a path back to him.
The legal response was unexpectedly limited. At the time of the inseminations, Indiana had no specific criminal offence covering a fertility doctor who substituted his own sperm. Traditional sexual-assault, battery and fraud laws did not map neatly onto the conduct or were constrained by limitation periods and statutory wording. Something could be a profound violation without fitting the available charge.
Investigators did have evidence that Cline lied during the official inquiry. A DNA sample showed an overwhelming probability that he was Ballard's biological father, contradicting his written denials. Prosecutors charged him with obstruction of justice rather than the underlying inseminations. In 2017 he pleaded guilty to two counts, received a suspended sentence and paid a $500 fine. He also surrendered his medical licence.
The punishment felt grotesquely small to the families because it addressed the lie to investigators, not the deception in the examination room. Cline avoided prison and was not convicted of a sexual offence. The result exposed a legal system capable of recognising damaged trust while lacking language for the reproductive violation itself.
Meanwhile, the sibling count continued to grow. Reports surrounding the documentary Our Father identified at least 94 people biologically connected to Cline, and the precise total may never be known. Many were raised within a relatively small radius of Indianapolis. Each new match carries personal consequences: a changed medical history, newly discovered relatives and anxiety about unknowingly dating somebody genetically close.
The case also created complicated relationships between Cline's acknowledged family and the donor-conceived siblings. Some people welcomed contact; others wanted privacy. Genetic truth can answer one question while creating many more, and no child had chosen the circumstances in which the network was created.
Families and advocates pushed Indiana lawmakers to close the gap. In 2019, the state enacted legislation creating civil and criminal consequences for fertility fraud involving misrepresentation of human reproductive material. The law could not retroactively impose a new offence on Cline, but it gave future patients a form of protection that had been missing.
Why This Story Matters
The Donald Cline case matters because consent is specific. Agreeing to insemination is not agreement to any sperm a doctor chooses. The donor's identity affects ancestry, medical risk and family relationships. Substitution changes the procedure at its most fundamental level.
It also shows how law can lag behind reproductive technology. Legislatures had rules for medical licensing, assault and ordinary fraud, but often had not imagined a physician secretly becoming a patient's child's biological father. When abuse falls between categories, victims may be left with civil claims or charges that describe only a small part of what happened.
Home DNA testing changed the balance of power. Anonymity that once seemed permanent became conditional on nobody in an extended family testing. That has brought answers to donor-conceived people, adoptees and families with hidden parentage, but it can also reveal life-changing information without warning. The technology delivers facts before individuals have support to process them.
We should be careful about claims concerning Cline's motive. Our Father explores religious imagery and a possible connection to pronatalist ideas, but no definitive evidence proves that a movement directed his conduct. Cline said he used his sperm when donors were unavailable and denied sexual motivation. Those explanations do not justify the deception, but speculation should not be presented as established fact.
The lasting achievement belongs to Ballard, the siblings, mothers and reporters who refused to accept that an ethical violation was legally invisible. Their work transformed private confusion into public evidence and new law. Listen to the episode for the first DNA matches, the family-tree detective work, Cline's changing admissions and the fight to make fertility fraud recognisable as a crime.
Topics Include
Jacoba Ballard's search for donor siblings through home DNA testing
The family-tree clue that connected the siblings to Donald Cline
How Cline substituted his own sperm without patients' knowledge
Angela Ganote's reporting and the official investigation in Indiana
The obstruction conviction, suspended sentence and surrender of his licence
How the families helped create Indiana's fertility-fraud law
Resources and Further Reading
“Our Father” - 2022 Netflix documentary
“Donald Cline” - Wikipedia
“Fertility Fraud” - Wikipedia