By Maria Armental

Illumina Inc. reported a bigger-than-expected drop in second-quarter results amid the coronavirus pandemic. Here's what you need to know:

PROFIT: Net income fell to $47 million, or 32 cents, from $296 million, or $1.99 a share, a year earlier. On an adjusted basis, profit fell to 62 cents a share from $1.35 a share a year earlier. Analysts surveyed by FactSet expected 60 cents a share, or 67 cents on an adjusted basis.

REVENUE: Total revenue fell to $633 million from $838 million a year earlier. Analysts expected $679.6 million.

OUTLOOK: Illumina had withdrawn financial projections for the year, citing uncertainty about the business impact from the pandemic.

PANDEMIC: Company officials have pointed to impact on shipments, for example. On Thursday, Chief Executive Francis deSouza said in a statement: "As expected, the second quarter was significantly impacted by pandemic-related disruption in our customers' operations and was particularly challenging for many of our research customers who remain closed or operating at limited scale."

Write to Maria Armental at maria.armental@wsj.com