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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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‘For As Long As Necessary’: Katz Says Campaign Against Iran Entering Decisive Stage
Israel’s Defense Minister Israel Katz and his Greek counterpart Nikos Dendias make statements to the press, at the Ministry of Defense in Athens Greece, Jan. 20, 2026. Photo: REUTERS/Louisa Gouliamaki
i24 News – Israel Katz said Saturday that the confrontation with Iran had entered a “decisive phase,” as US and Israeli strikes on Iranian targets continued and regional tensions escalated.
Speaking after a security assessment at Israel’s defense headquarters alongside Eyal Zamir, chief of staff of the Israel Defense Forces, and senior military and intelligence officials, the Israeli defense minister said the campaign against the Islamic Republic would continue “for as long as necessary.”
“The global and regional struggle against Iran, led by American President Donald Trump and Israeli Prime Minister Benjamin Netanyahu, is intensifying and entering its decisive phase,” Katz said.
Katz also praised US strikes on Kharg Island, a key Iranian oil hub, describing them as a “severe blow” to the Iranian regime. He said the attacks were an appropriate response to Iranian threats against the strategic Strait of Hormuz and to what he called Tehran’s attempts to pressure the international community.
At the same time, Katz said the Israeli Air Force was continuing a “powerful wave of attacks” against targets in Tehran and other parts of Iran.
He accused the Iranian leadership of using “regional and global terrorism” and strategic blackmail in an effort to deter Israel and the United States from pursuing their military campaign, warning that such actions would be met with a “strong and uncompromising response.”
Katz added that the outcome of the conflict would ultimately depend on the Iranian population. “Only the Iranian people can put an end to this situation through a determined struggle, until the overthrow of the terrorist regime and the salvation of Iran,” he said.
According to the minister, the confrontation now pits the Iranian regime’s determination to survive against growing military pressure from Israel and its allies.
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Trump Rejects Efforts to Launch Iran Ceasefire Talks, Sources Say
US President Donald Trump speaks on the day he honors reigning Major League Soccer (MLS) champion Inter Miami CF players and team officials with an event in the East Room of the White House in Washington, DC, US, March 5, 2026. Photo: REUTERS/Jonathan Ernst
President Donald Trump’s administration has rebuffed efforts by Middle Eastern allies to start diplomatic negotiations aimed at ending the Iran war that started two weeks ago with a massive US-Israeli air assault, according to three sources familiar with the efforts.
Iran, for its part, has rejected the possibility of any ceasefire until US and Israeli strikes end, two senior Iranian sources told Reuters, adding that several countries had been trying to mediate an end to the conflict.
The lack of interest from Washington and Tehran suggests both sides are digging in for an extended conflict, even as the widening war inflicts civilian casualties and Iran’s closure of the Strait of Hormuz sends oil prices soaring.
US strikes on Iran’s Kharg Island, the country’s main oil export hub, on Friday night underscored Trump’s determination to press ahead with his military assault. Iran’s new Supreme Leader Mojtaba Khamenei has vowed to keep the Strait of Hormuz shut and threatened to step up attacks on neighboring countries.
The war has killed more than 2,000 people, mostly in Iran, and created the biggest-ever oil supply disruption as maritime traffic has halted in the Strait of Hormuz, through which a fifth of the world’s oil is transported.
ATTEMPTS TO OPEN LINES OF COMMUNICATION
Oman, which mediated talks before the war, has tried multiple times to open a line of communication, but the White House has made clear it is not interested, according to two sources, who like others in this story were granted anonymity in order to speak freely about diplomatic matters.
A senior White House official confirmed Trump has rebuffed those efforts to start talks and is focused on pressing ahead with the war to further weaken Tehran’s military capabilities.
“He’s not interested in that right now, and we’re going to continue with the mission unabated. Maybe there’s a day, but not right now,” the official said.
During the first week of the war, Trump wrote on his Truth Social platform that Iran’s leadership and military were so battered by US-Israeli strikes that they wanted to talk, but that it was “Too Late!” He has a history of shifting foreign policy stances without warning, making it hard to rule out that he might test the waters for restarting diplomacy.
“President Trump said new potential leadership in Iran has indicated they want to talk and eventually will talk. For now, Operation Epic Fury continues unabated,” a second senior White House official said when asked to comment on this story.
The Iranian sources said Tehran has rejected efforts by several countries to negotiate a ceasefire until the US and Israel end their airstrikes and meet Iran’s demands, which include a permanent end to US and Israeli attacks and compensation as part of a ceasefire.
Egypt, which was involved in mediation before the war, has also tried to reopen communications, according to three security and diplomatic sources. While the efforts do not appear to have made progress, they have secured some military restraint from neighboring countries hit by Iran, according to one of the sources.
Egypt’s foreign ministry, the government of Oman and the Iranian government did not respond to requests for comment.
POSITIONS HARDEN ON ALL SIDES
The war’s impact on global oil markets has significantly increased the cost for the United States.
Some US officials and advisers to Trump urge a quick end to the war, warning that surging gasoline prices could exact a high political price from the president’s Republican Party, with US midterm elections looming.
Others are pressing Trump to maintain the offensive against the Islamic Republic to destroy its missile program and prevent it from obtaining a nuclear weapon, according to Reuters reporting.
Trump’s rejection of diplomatic efforts could indicate that, for now, the administration has no plans for a quick end to the war.
Indeed, both the United States and Iran appear even less willing to engage than during the opening days of the war, when senior US officials reached out to Oman to discuss de-escalating, according to several sources.
One source said Iran’s top security official, Ali Larijani, and Foreign Minister Abbas Araghchi had also sought to use Oman as a conduit for ceasefire discussions that would have involved U.S. Vice President JD Vance.
But those discussions have not materialized.
Instead, Iran’s position has hardened, said a third senior Iranian source.
“Whatever was communicated previously through the diplomatic channels is irrelevant now,” said the source.
“The Guards strongly believe that if they lose control over the Strait of Hormuz, Iran will lose the war,” the source added, referring to the Islamic Revolutionary Guard Corps, an elite paramilitary force that controls large parts of the economy.
“Therefore, the Guards will not accept any ceasefire, ceasefire talks, or diplomatic efforts, and Iran’s political leaders will not engage in such talks despite attempts by several countries.”
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US Strikes More Than 90 Iranian Military Targets on Kharg Island, CENTCOM Says
A satellite image shows an oil terminal at Kharg Island, Iran, February 25, 2026. Photo: 2026 Planet Labs PBC/Handout via REUTERS
United States forces executed a large-scale precision strike on Kharg Island in Iran on Friday night, the US Central Command said on Saturday.
“US forces successfully struck more than 90 Iranian military targets on Kharg Island, while preserving the oil infrastructure,” CENTCOM said.
The strike destroyed naval mine storage facilities, missile storage bunkers, and multiple other military sites, the US military said in a post on X.
President Donald Trump threatened on Friday to strike the oil infrastructure of Iran’s Kharg Island hub, unless Tehran stopped attacking vessels in the Strait of Hormuz.