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A German town built a granary atop its Jewish cemetery. Now the bones are yielding insights about Ashkenazi DNA.
BERLIN (JTA) – The city of Erfurt in central Germany is home to an impeccably restored medieval synagogue made possible because local Jews had been expelled long before the Nazis began their campaign to destroy Jewish sites.
Now, Erfurt’s long-hidden Jewish past is again offering new insights — this time about the genetic history of Ashkenazi Jews.
Human remains from a medieval Jewish cemetery in Erfurt have allowed what researchers say is the largest ancient Jewish DNA study to date. Conducted without disinterring any remains, in keeping with Jewish law, the study published Wednesday in the scientific journal Cell found that Erfurt’s medieval Jewish community was more genetically diverse than their modern-day cousins, and carried many of the same Jewish genetic diseases — such as Tay Sachs and cystic fibrosis — that affect Ashkenazi Jews today.
“There have been many previous DNA studies, but not of Jews,” said geneticist Shai Carmi, a professor at the Hebrew University of Jerusalem, whose search for study material led him to an archaeological dig at the Jewish cemetery in Erfurt. He and his collaborators were able to analyze DNA of 33 individuals who died between 1270 and 1400, using teeth they found there.
The study follows a similar analysis revealed in August by researchers in England, who studied the DNA from skeletons found at the bottom of a medieval well and concluded that the remains were likely of victims of an antisemitic massacre in 1190. Analysis of six individuals prior to their identification as Jewish revealed that Ashkenazi Jews developed a unique genetic variation centuries earlier than realized.
The Erfurt analysis also includes samples from before the epidemic of Black Death that was until recently understood to have created the genetic “bottleneck” that created the genetic markers common among Ashkenazi Jews today.
Erfurt’s Jewish settlement existed from the 11th to 15th century, with a brief gap following a 1349 massacre perpetrated after the Jews were falsely blamed for causing the bubonic plague. Surviving Jews returned there, but after all Jews were expelled once and for all in 1454, the city built a granary on top of the Jewish cemetery.
Karin Sczech participates in the excavation at the medieval Jewish cemetery of Erfurt. (Courtesy of TLDA Ronny Krause)
In 2013, the city approved the repurposing of the unused granary into a parking lot. Because it was an historic site, a rescue excavation was initiated, overseen for the State of Thuringia by German archaeologist Karin Sczech.
Meanwhile, Carmi had been looking for Jewish cemeteries anywhere in the world “where we could analyze remains already excavated,” he told JTA in a telephone interview from Jerusalem. “I consulted historians and eventually reached the archeologist in Erfurt.” Fortunately, he said, “they still hadn’t reburied the remains.”
He approached Sczech, who later became a co-author of the new study. In 2018, with a supportive judgment from Rabbi Ze’ev Litke — an Israeli expert on genetics and Jewish law — and permission from Erfurt’s then-rabbi, Benjamin Kochan, work began to extract and analyze DNA from detached teeth found in the graves. (About 500 Jews live in Erfurt today, most of them having migrated from the former Soviet Union since 1990.)
American geneticist David Reich picked up the teeth and brought them back to the department of human evolutionary biology at Harvard University in Cambridge, Massachusetts, where drilling and DNA extraction took place.
While the skeletons were reburied, the teeth are still stored at the research institutes where they have been analyzed, in case scientists need to retest to verify the result.
The project provides an ethical basis for studies of ancient Jewish DNA, Carmi said. “Of course we couldn’t just go to a cemetery and dig and take out skeletons; this would be prohibited,” he said, referring to Jewish law prohibiting the removal of bones from where someone was buried.
But Litke opined that the study could be done, because the bones already had been disturbed for an unrelated reason. “He recommended using teeth, as the analysis does almost no damage,” Carmi said.
There are many motivations to study Jewish DNA: One can find lost relatives going back a few generations, and answer questions about Jewish origin of partners intending to marry. But the goal of Carmi’s team was “to fill the gaps in our understanding of Ashkenazi Jewish early history.”
There are several non-destructive ways to obtain DNA from human remains, said Carmi, who also works as a consultant to an Israeli firm that helps clients trace their genetic roots.
“You can take an almost microscopic slice of bone and extract DNA in a solution, or put the entire bone in a solution and extract the DNA without drilling, without disturbing the dead. This opens the way to doing studies even without teeth,” he added.
His team found that the Erfurt community appeared to fit into two genetically distinct groups, descending either from Middle Eastern or European populations. This genetic variability no longer exists, Carmi said.
At the same time, Carmi said, the analysis found remarkable continuity in the local community, as well. “One third of the Erfurt individuals descended from one woman through their maternal lines,” he said, adding that evidence suggested that she lived between 1,000 and 2,000 years ago.
In a press statement, geneticist Reich of Harvard said the work “also provides a template for how a co-analysis of modern and ancient DNA data can shed light on the past. Studies like this hold great promise not only for understanding Jewish history, but also that of any population.”
The research team, with more than 30 scientists, included Hebrew University’s Shamam Waldman, a doctoral student in Carmi’s group, who performed most of the data analysis.
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Iran’s Guards Will View Military Vessels Approaching Strait as Ceasefire Breach
FILE PHOTO: A map showing the Strait of Hormuz is seen in this illustration taken March 23, 2026. REUTERS/Dado Ruvic/Illustration/File Photo
Iran’s Revolutionary Guards said on Sunday that any military vessels attempting to approach the Strait of Hormuz will be considered a violation of the two-week US ceasefire and be dealt with harshly and decisively.
The strait is under the control and “smart management” of Iran’s Navy, the Guards said in a statement reported by Iranian state media, adding it is “open for the safe passage of non-military vessels in accordance with specific regulations.”
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Iran Rejected US Demand to Stop Funding Proxies, and Halt Uranium Enrichment During Talks
FILE PHOTO: The atomic symbol and the Iranian flag are seen in this illustration, July 21, 2022. REUTERS/Dado Ruvic/Illustration/File Photo
i24 News – Iran has rejected core US demands in recent negotiations, including an end to uranium enrichment, the dismantling of major nuclear facilities, and a halt to support for regional terrorist groups, according to a senior US official speaking to Reuters.
The official also said that Tehran refused to end backing for Hamas, Hezbollah, and the Houthis, as well as calls to fully open the strategically vital Strait of Hormuz, underscoring deep divisions that continue to stall diplomacy.
The failed talks come as assessments from officials and experts suggest that Iran’s nuclear program has remained largely resilient despite five weeks of intense US and Israeli strikes.
According to reporting from The Wall Street Journal, that while the campaign did cause significant damage to research facilities and parts of Iran’s enrichment infrastructure, the strikes appear to have stopped short of eliminating Iran’s most sensitive capabilities.
Iran likely retains operational centrifuges and access to a heavily fortified underground enrichment site, preserving the technical foundation of its program.
A critical concern for Western officials is Iran’s continued possession of an estimated 1,000 pounds of near-weapons-grade uranium. The International Atomic Energy Agency has reported that roughly half of this stockpile is stored in reinforced containers within tunnels beneath the Isfahan nuclear complex.
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Trump Vows to Blockade Strait of Hormuz After Iran Peace Talks Fail to Yield Agreement
Pakistan’s Prime Minister Shehbaz Sharif meets with Iranian Parliament Speaker Mohammad Bagher Ghalibaf, as delegations from the United States and Iran are expected to hold peace talks, in Islamabad, Pakistan, April 11, 2026. Office of the Iranian Parliament Speaker/WANA (West Asia News Agency)/Handout via REUTERS
President Donald Trump said on Sunday the US Navy would start blockading the Strait of Hormuz, raising the stakes after marathon talks with Iran failed to reach a deal to end the war, jeopardizing a fragile two-week ceasefire.
Trump also said in a post on Truth Social that the US would take action against every vessel in international waters that had paid a toll to Iran, and begin destroying mines that he said the Iranians had dropped in the strait, a choke point for about 20% of global energy supplies that Iran has blocked.
Iran’s Revolutionary Guards responded with a statement warning that military vessels approaching the strait will be considered a ceasefire breach and dealt with harshly and decisively, underlining the risk of a dangerous escalation.
“Effective immediately, the United States Navy, the Finest in the World, will begin the process of BLOCKADING any and all Ships trying to enter, or leave, the Strait of Hormuz,” Trump said in his Truth Social post.
“I have also instructed our Navy to seek and interdict every vessel in International Waters that has paid a toll to Iran. No one who pays an illegal toll will have safe passage on the high seas,” Trump added.
“Any Iranian who fires at us, or at peaceful vessels, will be BLOWN TO HELL!” he added.
Six weeks of fighting has killed thousands, roiled the global economy and sent oil prices soaring as Iran prevented traffic through the strait.
MORE NEGOTIATIONS?
In an interview with Fox News after his post about the strait, Trump said that he believed Iran would continue to negotiate and called the weekend discussions “very friendly.”
“I do believe they’re going to come to the table on this, because nobody can be so stupid as to say, ‘We want nuclear weapons,’ and they have no cards,” Trump told Fox News from his golf course near Miami, Florida.
Trump also said that NATO allies, whom he has criticized for failing to back the war he launched along with Israel on February 28, wanted to help with the operation in the strait.
There was no immediate comment from Washington’s allies.
The weekend talks in Islamabad, which followed the announcement of a ceasefire last Tuesday, were the first direct US-Iranian meeting in more than a decade and the highest-level discussions since the 1979 Islamic Revolution.
“The bad news is that we have not reached an agreement, and I think that’s bad news for Iran much more than it’s bad news for the United States of America,” said Vice President JD Vance, who headed the US delegation.
A US official said Iran had rejected Washington’s call for an end to all uranium enrichment, the dismantling of all major enrichment facilities and the transfer of highly enriched uranium. The two sides also failed to reach agreement on the US demand that Iran cease funding for Hamas, Hezbollah and the Houthis as well as fully open the strait, the official added.
Iran’s Parliamentary Speaker Mohammad Baqer Qalibaf, who led his country’s delegation along with Foreign Minister Abbas Araqchi, blamed the US for not winning Tehran’s trust, despite his team offering “forward-looking initiatives.”
Iran’s President Masoud Pezeshkian, who discussed the talks in a call with Russian President Vladimir Putin, said Tehran wanted “a balanced and fair agreement.”
“If the United States returns to the framework of international law, reaching an agreement is not far off,” he told Putin, Iranian state media reported.
ISRAEL CONTINUES BOMBING LEBANON
Iran’s semi-official Tasnim news agency said “excessive” US demands had hindered reaching a deal. Other Iranian media said there was agreement on a number of issues, but the strait and Iran’s nuclear program were the main sticking points.
Despite the stalemate, three supertankers fully laden with oil passed through the Strait of Hormuz on Saturday, shipping data showed, in what appeared to be the first vessels to exit the Gulf since the ceasefire deal.
Israel has continued bombing Tehran-backed Hezbollah terrorists in Lebanon, insisting – along with Washington – that that conflict was not part of the Iran-US ceasefire. Iran says the fighting in Lebanon must stop.
The Israeli military said it struck Hezbollah rocket launchers overnight into Sunday and black smoke could be seen rising in the southern suburbs of the Lebanese capital Beirut.
And in Israeli villages near the border, air raid sirens sounded, warning of incoming rocket fire from Lebanon.