It's only clear if an egg or embryo is damaged after it's been thawed and implanted.
The storage tank had off-site monitoring and an audible alarm that would alert staff to such a temperature change.
"We don't have the foggiest idea about the reasons why yet", DePompei said.
University Hospitals said it is bringing in independent experts to determine the cause.
Social Democrats name Germany's new finance and foreign ministers
Merkel's Christian Democrats and Bavarian Christian Social Union allies have already announced their choices of cabinet ministers. Merkel, in power for 12 years, is due to formally launch her fourth-term government next Wednesday.
"At this point, we do not know the viability of all of the stored eggs and embryos, although we do know some have been impacted", said Patti DePompei, the president of University Hospital Rainbow Babies & Children's Hospital and UH MacDonald Women's Hospital, in a Facebook video announcing the news.
The typical process of storage or freezing of the eggs involves an extraction of the eggs from a woman after which it is stored in liquid nitrogen tanks in a cryogenic facility.
The failure caused the temperature to rise, ultimately making the eggs and embryos at the facility lose their viability.
UH's Fertility Center is primarily located at the hospital's Ahuja Medical Center in Beachwood, and has offices at the hospital's main campus and Crocker Park locations.
'Underdog' Manny Pacquiao announces fight with Lucas Matthysse in June
Pacquiao hasn't fought since last July when he lost his WBO title to Australia's Jeff Horn on a controversial points decision. It was the first world title for Pacquiao under Roach; they would go on to win belts in six more weight classes.
Approximately 500 to 600 families were affected by the malfunction and University Hospitals have begun the tedious task of reaching out to all the families to see how they wish to proceed.
"We are so very sorry this happened". The equipment reportedly failed last month due to which the temperature inside the refrigerator storing the eggs became warmer than it should. "Obviously the situation that occurred here is devastating for the families involved, and it's devastating for. our staff", DePompei tells NBC News. "We are committed to getting answers and working with our patients individually to address their concerns". A call center was also set up to expedite scheduling for any patients that need to come in.
The hospital has asked patients or those with questions to call the UH Fertility Center information line at 216-286-9740.
Despite the fact that the cost of egg solidifying has descended as of late, the expenses can run from at any rate $12,000 to $14,000 for a lady to experience the methodology.
Racist chants caught on camera at university
Police would not release the names of the men, who were in custody Thursday morning pending charges, a spokeswoman told CNN. In the video, people can also be heard yelling " f**k the blacks " and "blacks and whites will never live together".